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Color Reference

Research-grade library of 1,058 named colors spanning CSS4, Crayola, Pantone approximations, X11, RAL, and curated design system palettes — with full HEX, RGB, HSL, and perceptual-space values. Filter, search, compare, and export — entirely on-device.

1,058+ Colors HEX · RGB · HSL OKLab · LCh On-Device Zero Network
💡 Quick Start: Use the Browse tab to explore all 1,058+ colors with category chips and search. Switch to Search for advanced hue/saturation/lightness range filtering or ΔE nearest-color lookup. Use Harmony to generate 7 color schemes. Research provides deep perceptual metrics — all on-device, zero network.
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Base Color
Pick a base colour to generate harmony schemes.
Click "Find Named" to identify nearest named color.
Color Harmonies
Input Color
View Detail →
Enter a HEX colour to see all space conversions.
Color Space Values
Space Value
Click "Compute" to generate values.
Research & Analysis
Single Color Analysis
Click Analyse to see perceptual metrics.
Batch Analysis

Enter one HEX per line. Analyses name, category, HSL, luminance, and WCAG contrast.

Click Run Batch to analyse colours.
Palette Audit

Enter 2+ HEX values (one per line). Checks WCAG contrast ratios and ΔE between all pairs.

Click Audit Palette to analyse.
Name Suggestion
Click Suggest Names to find nearest named colors.
Actions
Export Full Database
Exports all 1,058+ colors in the selected format.
Current View
Copies only the currently filtered/visible colors.
Share
References & Citations

Color Naming Standards

[1] CSS Color Level 4 — W3C Candidate Recommendation. Defines 148 named CSS colors with sRGB hex values.

[2] X11 Color Names — Historical color name set from the X Window System (MIT, 1985). Extended to ~750 entries.

[3] Crayola Color Chart — Binney & Smith (now Crayola LLC). Standardised crayon color names since 1903.

[4] RAL Classic — Deutsches Institut für Gütesicherung und Kennzeichnung. Industrial color standard (213 colors).

[5] Pantone Matching System (PMS) — Pantone LLC. Spot color identification system widely used in print and design.

Color Science Foundations

[6] CIE 15:2004 — Colorimetry (3rd Edition). Standard observer, illuminants, chromaticity coordinates.

[7] IEC 61966-2-1:1999 — Default RGB colour space — sRGB. Defines transfer function, primaries, and D65 whitepoint.

[8] Sharma, G., Wu, W. & Dalal, E.N. (2005) — The CIEDE2000 Color-Difference Formula. Color Research & Application, 30(1), 21-30.

Perceptual Color Spaces

[9] CIELAB — CIE 1976 L*a*b* color space. Perceptually uniform for color difference measurement.

[10] OKLab — Björn Ottosson (2020). Improved perceptual uniformity over CIELAB for display applications.

[11] CIE LCh — Cylindrical representation of CIELAB. Lightness, Chroma, and Hue angle.

Accessibility & Contrast

[12] WCAG 2.1 — Web Content Accessibility Guidelines. Defines luminance contrast ratio thresholds (AA: 4.5:1, AAA: 7:1).

[13] Relative Luminance — W3C definition per sRGB linearization: L = 0.2126R + 0.7152G + 0.0722B.

About this tool

This tool provides a research-grade reference library of 1,058+ named colors across CSS4, Crayola, Pantone approximations, X11, RAL, and curated design system palettes — with full HEX, RGB, HSL, OKLab, CIE Lab, and CIE LCh values. Features include category filtering, advanced range search, color harmony generation, ΔE nearest-color lookup, WCAG contrast auditing, and batch export — entirely client-side (zero network). Color approximations are not official Pantone or RAL matches.