Colour Memory
io.github.DigbyO/colour-memory · v2.3.5 · MCP 2025-11-25
Colour meaning, history and evidence for AI: 45,000+ source-graded colour records and 91 tools.
Reachability
reachable
checked 2026-10-12 06:35 UTC
Registry status active
Tools pinned 92
167bff9e8d73
Tools last changed
2026-10-12
Provenance
Registry namespace io.github.DigbyO
(GitHub-account verified by the official registry)
Repository
github.com/digbyo/colour-memory-api
repo gone
Website
https://www.colourmemory.com
Remote endpoints
https://colour-memory-api-production.up.railway.app/mcp (streamable-http)
https://api.colourmemory.com/mcp (streamable-http)
Observed changes
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| 2026-10-12 06:35 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-10-12 05:33 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-10-11 06:37 | tools changed | 0 added, 0 removed, 2 changed |
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| 2026-10-10 05:32 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-10-09 06:35 | tools changed | 1 added, 0 removed, 2 changed |
| 2026-10-09 05:32 | tools changed | 1 added, 0 removed, 2 changed |
| 2026-10-08 06:33 | tools changed | 0 added, 0 removed, 3 changed |
| 2026-10-08 05:31 | tools changed | 0 added, 0 removed, 3 changed |
| 2026-10-07 05:30 | first capture | 91 tools pinned |
| 2026-10-06 06:31 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-10-05 06:30 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-10-04 06:41 | tools changed | 0 added, 0 removed, 2 changed |
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| 2026-09-30 06:24 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-09-29 06:23 | tools changed | 0 added, 0 removed, 5 changed |
| 2026-09-28 06:35 | tools changed | 0 added, 0 removed, 2 changed |
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| 2026-09-25 06:26 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-09-24 06:25 | tools changed | 0 added, 0 removed, 4 changed |
| 2026-09-23 06:20 | tools changed | 0 added, 0 removed, 2 changed |
| 2026-09-21 06:27 | tools changed | 0 added, 0 removed, 2 changed |
Pinned tool definitions (92)
| Tool | Description |
|---|---|
| query_conceptual | Ask a cultural, historical, or material colour question. Returns named archive colours with provenance and cultural context. Works for abstract queries like 'grief' (returns Ophelia Violet, Titan's Grief), 'toxic Victorian pigments'... |
| extract_image_colours | Extract dominant colours from a photograph using Colour Memory's proprietary k-means++ algorithm. Requires either a public image_url, or an image_id. If you only have a raw uploaded file with no public URL (e.g. a local file path or a... |
| query_hex | Find the closest named archive colours to a hex value using CIEDE2000 perceptual distance. |
| palette_specify | Generate a complete interior specification from 2-8 hex values. Returns surface assignments, 60-30-10 proportions, lighting behaviour, and archive colour names. The result already carries the rendered palette and its PNG, PDF, ASE, JSON... |
| colour_metrics | Returns numeric metrics derived from a single display colour: an estimated light reflectance value (LRV) and band, relative luminance, CIELAB lightness, chroma and hue angle, and Bradford corresponding colours under two standard... |
| colour_harmonies | Return complementary, triadic, analogous, and split-complementary harmonies matched to named archive colours. Also available: 'hay_contrast' -- D.R. Hay's (1838) documented contrast pairing between six named hues (yellow/purple,... |
| accessibility_check | Evaluates contrast for a single foreground/background pair. For palettes or multiple colours, use accessibility_matrix instead, it replaces multiple accessibility_check calls in one response. |
| accessibility_matrix | Accept a palette array and return every foreground/background combination with contrast ratio, AA normal, AA large, AAA normal, AAA large pass/fail grades, and a summary. Use this instead of calling accessibility_check multiple times... |
| accessibility_rules | Convert a palette WCAG matrix into actionable design-system rules. Returns safe pairs, AA-only pairs, large-text-only pairs, decorative-only pairs, best text colour per background, and component usage rules. Deterministic, no LLM cost. |
| colour_slugs | Return every developer token format for a hex value: CSS variable, kebab-case, camelCase, PascalCase, Tailwind class, TypeScript const, SCSS variable. Archive-grounded name source with dE2000 distance. |
| palette_light_dark | Generate light-mode and dark-mode role maps from a palette. Analyses LRV, assigns background/surface/text/accent roles for each mode, checks body text contrast safety, and flags missing neutrals. The result already carries the rendered... |
| accessibility_font | Given a background hex and a palette of candidate foreground colours, return them ranked by contrast ratio with WCAG grades and specific recommendations for body text, large text, and UI components. |
| archive_search | Full-text keyword search across all archive colour names and notes. Find colours by name fragment, material, cultural reference, pigment type, or historical period. Complements conceptual embedding search with exact keyword matching.... |
| colour_combination | Assess 2-5 colours as a combination for a given context (UI, data viz, fashion, interior, print, branding). Returns harmony type, clash warnings, contrast summary, and specific deployment rules for the context. |
| palette_strict | Like palette_concept but with archive filtering and relevance controls. Use allowed_archives to restrict results to specific cultural traditions e.g. ['Japan'] for Japanese only. Use min_relevance to filter weak concept matches. Fixes... |
| archive_report_document | Create a designed, full-colour Word (.docx) report from Colour Memory records. Use this whenever the user asks for a document, report, write-up, handout or Word file built from archive findings, instead of writing a plain document... |
| palette_pdf | Generate a premium branded PDF specification sheet from a palette of archive entries. Returns a downloadable PDF with full-bleed colour panels, archive names, provenance notes, RAL nearest match, LRV, chroma, WCAG contrast data, and... |
| palette_audit | Full palette quality audit. Scores on accessibility, cultural risk, tonal balance, colour diversity, and archive naming strength. Returns overall score 0-100, grade, and prioritised fix list. Enterprise quality gate -- use before... |
| brand_system | Complete brand colour system in one call. Returns colour roles with archive names, light and dark mode role maps, typography guidance, usage rules per colour, design tokens (CSS, Tailwind, Figma), and citation cards. Deterministic. No... |
| brand_asset_pack | Complete brand asset pack. Returns CSS variables, Tailwind config, Figma tokens JSON, citation cards, and a Markdown brand guide. Everything a brand team needs to ship. Deterministic. No LLM cost. |
| accessibility_simulate | Return simulated hex values for full-severity protanopia, deuteranopia and tritanopia only, using the Machado, Oliveira & Fernandes (2009) model (severity 1.0, linear sRGB), with a flag when a simulated colour had to be clipped to sRGB.... |
| colour_match_paint | Find the nearest named colour in commercial paint systems including Farrow and Ball and Little Greene. |
| colour_card | Look up a named colour and return its hex, archive, provenance, and cultural notes. |
| meta_capabilities | Return a live inventory of all active endpoints and MCP tools. Use this first to discover what the API can do before making calls. Returns tool count, endpoint list, MCP-exposed tools, and usage notes. Deterministic -- no LLM cost. |
| system_status | Zero-argument diagnostic call: returns exactly what build is live right now (build_sha, schema_version, schema_hash, archive_revision, tool_count, generated_at, server_environment). Use this to confirm you're seeing the current deployed... |
| colour_story | Given a hex value, returns a rich narrative about that colour's cultural journey — where it has appeared in history, what it has meant to different civilisations, and what archive names it carries. Essential for image generation... |
| palette_concept | Generate a historically grounded colour palette from a cultural concept or theme. Returns 4-6 coordinated archive colours with hex values, proportions, and provenance. Examples: 'Victorian mourning', 'Ottoman court', 'Japanese... |
| colour_mix | Simulate perceptually modelled subtractive mixing of two colours in CIE Lab space (not RGB screen blending). Returns the resulting mixed hex value and its nearest archive match with cultural context. Uses CIE Lab subtractive model for... |
| colour_timeline | Given a concept or colour name, traces its documented appearances across cultures and centuries in chronological order. Returns a dated sequence of archive entries showing when and where the colour appeared, with primary sources. Use... |
| image_palette | Upload an image (base64 encoded) and extract its dominant colour palette, with each colour matched to its nearest named archive entry with full cultural provenance. Uses K-means++ extraction; sRGB pixels are read as D65 CIELAB for... |
| colour_compare | Deep perceptual and semantic comparison between any two hex values. Returns quantified differences in LRV, chroma, hue angle, warmth, and CIEDE2000 distance, plus cultural context on both — which is more authoritative, more saturated,... |
| colour_cultural_risk | Cultural risk assessment for a hex value or palette (symbolic weight, regional taboos, religious associations, market flags). This is one component of colour_passport for single colours. Use colour_passport for a general profile; call... |
| design_session | One-call compound tool. Submit a concept, medium, audience, and constraints — receive a complete design package: historically grounded palette, cultural narrative, commercial paint matches, WCAG accessibility check, illuminant... |
| image_personal | Upload a portrait photo and receive a full personal colour analysis. Determines your seasonal type (Spring, Summer, Autumn, or Winter), colour depth (light, medium, or deep), and undertone (warm, cool, or neutral). Returns a curated... |
| style_match | The colour question every stylist gets asked: does this bag go with this outfit? Submit your outfit items as hex values with labels (dress, bag, shoes, coat, belt, scarf, etc.) and receive a verdict on what works, what clashes, what is... |
| interior_specify | Generate a complete interior colour specification from a concept or brief. Input a room concept, type, and style — receive a professionally structured colour scheme with 60/30/10 surface assignments, archive colour names with full... |
| house_specify | Generate a complete multi-room house colour scheme from a single archive. Where the retrieved evidence supports it, rooms are grouped by documented provenance (same object, same pattern colourway, same source citation, same designer,... |
| palette_generate | Send a palette of up to 12 slots, locking some with hex values and leaving others empty. Empty slots are filled with the nearest CIEDE2000 archive match, interpolated from the locked anchors. Optional archive filter restricts fills to... |
| palette_gradient | Generate a perceptually smooth gradient between 2-5 archive anchor colours. Each interpolated stop snaps to the nearest real archive colour by CIEDE2000. Anchor stops are kept true to their source. Choose linear (physically accurate Lab... |
| palette_translate | Map any list of hex values into a target archive using CIEDE2000 nearest-neighbour matching. Each input hex is matched to the closest named colour in the chosen archive, with a delta-e relevance band (exact / close / approximate /... |
| archive_cliche | Find the most surprising archive colour for a concept and generate a memorable one-liner subverting the obvious expectation. Supply a concept (e.g. 'love', 'grief', 'luxury', 'power') and optionally the expected colour (e.g. 'red' for... |
| colour_verdict | Evaluate a hex colour for a specific use case, market, and medium. Returns a decisive verdict: use_with_confidence, use_with_caution, or avoid. Includes strengths, risks, avoid-if scenarios, and better alternatives where needed. Backed... |
| palette_verdict | Evaluate a palette of 2-8 hex values for a use case, market, and medium. Returns a verdict (strong / strong_with_adjustment / weak / avoid), a score 0-100, the role of each colour, the single biggest weakness, and a concrete suggestion... |
| agent_brief | Generate a complete colour direction package for another AI agent or image generation model. Fetches a historically grounded archive palette from the concept, then produces: an agent brief (colour direction in prose), colour tokens with... |
| colour_strategy | Single-call commercial colour strategy report. Combines archive grounding, verdict, brand fit, market risk, category cliche check, material behaviour, copy hooks, and usage rules. Input: hex + brand_context (category, positioning,... |
| archive_report_brief | One-call complete archive research package for a document, PDF, or editorial brief. Input: title, audience, themes, archives to draw from, things to avoid, number of colours. Output: ranked colour cards with full provenance, story... |
| palette_heritage | Given a legacy palette, generate an archive-grounded premium support system. For each existing colour: identifies its historical archive anchor, names it, and scores its provenance confidence. Detects palette gaps and fills them from... |
| archive_coverage_gap | Given a list of themes, report which are well-evidenced in the archive and which are under-evidenced or missing. Returns a coverage matrix: for each theme, entries found, coverage grade (strong/moderate/weak/missing), best match with... |
| archive_cultural_anachronism | Check a list of colour entries for anachronism risk. Detects whether the primary source date falls outside the requested period, whether the archive is a known modern source (RacingSilks, FootballStrips), and returns a period_relevance... |
| session_brief | Single-call forensic colour brief generator. Runs coverage gap analysis, pulls best archive colours, checks for anachronisms, scores claim roles (anchor/support/analogue/provocation/reject), auto-rejects stubs, generates editorial... |
| index_resonance | Colour Memory's proprietary semantic metric. Score how tightly the material origin of a colour aligns with its social consequence. 1.00 = material and consequence are indistinguishable (blood as prognosis, ash as finality). 0.80 =... |
| archive_evidence_gap | Given a hex value and a proposed claim about it, return whether the archive supports that claim, what is missing, what kind of source would be needed, and safe agent wording. This is Colour Memory's anti-hallucination endpoint. It turns... |
| brand_collision | Can this brand own this colour against these competitors in this market? Input: brand hex, brand name, competitor hexes and names, market, region. Returns CIEDE2000 distance to each competitor, archive context for each colour, a... |
| brand_report | One-call complete brand colour intelligence report. Input: hex + brand context + markets + medium + product type. Output: archive anchor, cliche contradiction, colour DNA, strategy verdict, commercial signals, market reading per market,... |
| brand_audit | Fast, fully deterministic brand colour audit. Accepts a palette array plus market, use_case, medium and brand_category. COMPUTED SYNCHRONOUSLY, no model call of any kind: colour roles with archive names, the full WCAG accessibility... |
| agent_verify | Verify that an AI-generated image actually used the colours specified in an agent_brief call. Supply the generated image (URL or base64) and the target palette from agent_brief colour_tokens. Returns a fidelity score 0-100, dE2000... |
| colour_passport | Canonical single-call colour truth object. Returns everything known about a hex value: colour science (Lab, LCh, hue, chroma, depth, temperature, LRV), archive anchor with dE2000, claim_strength, do_not_say and evidence grade, hex... |
| colour_passports | Batch version of colour_passport. Submit up to 20 hex values in one call. Returns a full Colour Passport for each unique hex: colour science, archive anchor, evidence grade, do_not_say constraints, hex provenance, accessibility, and... |
| colour_dna | Compact semantic fingerprint for a single hex colour. This is one component of colour_passport. Use colour_passport for a general colour profile; use this only when the user explicitly wants the fingerprint format alone. The result... |
| ecommerce_copy | Generate complete ecommerce product copy for any colour. Input: hex + product type + tone + channel. Output: colour name, product title, short description, long description, SEO title, meta description, alt text, Instagram caption, and... |
| colour_hooks | Generate a hook sentence, three-sentence story, tweet, image prompt, and follow-up questions for any hex colour. Backed by the nearest archive colour's cultural provenance. Tunable by audience (general public, designers, historians,... |
| archive_provenance | Explains the provenance of a named archive colour: documented fact vs computational derivation vs cultural interpretation, with confidence and citation format. This is one component of colour_passport, but also a standalone research... |
| colour_forensics | Assess whether a hex colour can be safely specified for a physical application. Returns: specification_safe verdict (yes / conditional / avoid), risks, required actions, light behaviour under three illuminants (north daylight, warm... |
| palette_iterate | Refine an existing palette using natural language feedback. Submit your current palette and feedback such as more melancholic, too corporate add warmth, or better for Gen Z luxury. Returns a refined palette with archive grounding and... |
| colour_variants | For any named archive colour, return historical variants, lighter and darker versions with archive matches, and cultural siblings. Essential for designers exploring around a colour. The result already carries the rendered palette and... |
| palette_export | Export a palette to CSS custom properties, Figma design tokens, Tailwind config, ASE hex list, or JSON. Each colour is automatically named from the archive. Embeds Colour Memory directly into design workflows. |
| palette_compare | Deep perceptual, cultural, and commercial comparison between two palettes. Returns timelessness scores, commercial strength, cultural depth, emotional difference, and a winner verdict for the stated use case. The result already carries... |
| ecommerce_namer | Generate archive-grounded colour names for up to 40 product SKUs. Input: list of hex values, product category, brand name, naming style. Output: for each hex -- archive name, source citation, one-line product description, dE2000 match... |
| ui_states | Generate a complete WCAG-compliant UI state palette from a brand hex. Returns colours for: brand, hover, active, disabled, focus ring, success, warning, error, info, surface subtle, surface strong. All states computed for contrast... |
| colour_namer | Generate memorable, archive-verified colour names for any hex value. Choose from naming styles: geographical, poetic, material, literary, botanical, industrial, or mixed. Every name is grounded in a real archive source. The core of the... |
| palette_swatch | Generate a clean, text-free PNG swatch image from hex colours. Returns a URL to the PNG. Use for Midjourney --sref style references or design mood boards. Supports photo-proportional weights from palette extraction, equal distribution,... |
| palette_analyse | Analyse a palette of hex colours against the Colour Memory archive. For each colour returns the nearest named archive entry with cultural name, source, claim_strength (A-E), do_not_say guardrails, and alternatives when confidence is... |
| ingest_image | Upload an image to Colour Memory for ephemeral processing. Returns image_id valid 5 minutes. Pass image_id to palette_extract or image_brief. Use for any image over 50 KB. |
| palette_extract | Extract dominant colours from an image using k-means++ clustering. Accepts a public image URL or base64-encoded image. Returns hex values with proportional weights sorted by luminance. Optionally runs palette_analyse on the results. Use... |
| image_brief | Compound endpoint: one image in, full creative brief out. Extracts dominant colours, matches them to the Colour Memory archive with coherent cultural naming, understands the scene, identifies the style period, suggests product... |
| project_get | Retrieve summary metadata for a durable house project you own -- title, project type, current version number, schema/archive revision, created/updated timestamps, and the content hash of the requested version. Requires an API key; the... |
| project_list | List durable house projects owned by the calling API key, most recently updated first. Anonymous (keyless) calls always return an empty list -- temporary anonymous projects are never listable, only resolvable directly by their... |
| project_versions | List every stored version of a durable house project you own, oldest first, with each version's content hash, build/schema/archive revision, and creation time. Version 1 is always immutable and always present. Earlier versions remain... |
| project_delete | Soft-delete a durable house project you own. Idempotent -- deleting an already-deleted, unknown, or not-owned project_id returns the same successful-shaped response either way, and never discloses which case occurred. Version rows are... |
| project_export | Export the same house-flagship content palette_pdf renders as a genuinely editable Word document or Excel workbook -- for a client who needs to annotate the scheme, or a contractor building a materials/procurement schedule from it.... |
| brand_guideline_specify | Generates the case for a brand's colours, not just the colours themselves: three genuinely different, archive-grounded candidate palettes from a brand brief, each scored for distinctiveness against named competitors, checked for... |
| brand_guideline_status | Resolves a brand_job_ref returned by brand_guideline_specify when its race-to-complete window elapsed before generation finished. Read-only, in-process lookup -- never re-runs generation. Returns {"status": "processing"} if still... |
| brand_guideline_select | Records which brand_guideline_specify candidate was chosen, which colours should be locked for future iteration, and which claims should be suppressed -- produces a revised brand_ref (same reference, a new version underneath it, exactly... |
| brand_guideline_pdf | Renders a client-facing brand colour standard from an existing brand_ref. The document covers the direction carried forward and its assessment, the colour system in proportion, the argument for the palette, packaging and digital... |
| brand_guideline_claims | Resolves claim_id values (returned inline on every colour by brand_guideline_specify and brand_guideline_select) into their full claim record: source title/locator/citation, the exact permitted claim text, do_not_say restrictions, and... |
| render_colour_result | Show a finished colour result to the customer AS COLOUR. Call this last, once the palette, house scheme, brand system or audit you are going to hand over has been decided -- it presents what you already have and chooses nothing. Do not... |
| palette_finalize | Package a palette YOU HAVE ALREADY CHOSEN into a professional, visible, downloadable deliverable. Call this ONCE, after you have decided the final colours for the customer -- it verifies and packages your decision and returns the... |
| tool_guide | Deterministic tool-routing lookup -- not an LLM call, always instant, never consumes archive or LLM credit. Give it a goal in plain words (e.g. 'I have a brand colour and want to check it against competitors', 'I want to paint a whole... |
| historical_colour_query | Ask a question about how historical colour authorities actually reasoned, and get evidence with provenance rather than a summary. Covers seven validated source builds -- Jennings (paint recipes, 1902), Bradley (rotating-disc apparatus,... |
| colour_relationships | What is this archive record connected to, and why? One-hop lookup over Colour Memory's stored relationship graph -- today populated for PigmentLineage, whose 348 design_combination nodes are Wada's 1933 Dictionary of Color Combinations... |
| why_connected | Are these two specific archive records connected -- and if so, exactly why? Traces the real path between them through Colour Memory's stored relationship graph (e.g. two Wada colours that share membership in the same published... |
| vanderpoel_pairing | Emily Noyes Vanderpoel's documented 'good' dyad/triad hue groupings (Color Problems, 1902, Plate XXXVI 'Good Dyads or Pairs' and Plate XXXVII 'Good Triads'), served from the build artefacts vanderpoel_dyads.json and... |
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