Perceptual Color Science Engine

Perceptual Palette Studio & Accessibility Auditor

Engineered with OKLCH uniform color space, CIEDE2000 perceptual delta, and WCAG 3.0 APCA readability algorithms. Derive production-ready design tokens in seconds.

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Curated Trend Palettes (Perceptual OKLCH)

Select a balanced harmony to load instantly into the studio and contrast tests

BASE COLOR

Analogous

Harmonic Rule (OKLCH)

Upload Image to Extract Palette (K-Means)

Export Design Tokens

THE PALETTE

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Color Vision Deficiency Simulation (CVD) Standard Vision

Color Vision Deficiency Multimodal Matrix (Machado 2009 / Brettel 1997)

Simultaneous visual and spectral audit of the active palette across 4 deficiency spaces

100% Spectral Simulation

Live UI & Design System Preview

Dynamic preview on real interface components with Dark/Light theme support and spectral CVD simulation

Colorust Analytics

Net Revenue (MRR)

$148,920 +24.5%

Average Contrast

9.4 : 1 AAA Pass

Conversion Rate

18.6% +5.2%

PRO FEATURE Rated 4.9 / 5.0

Colorust Perceptual Studio

Standardized design tokens in OKLCH with guaranteed WCAG 2.1 AA and WCAG 3.0 APCA Lc compliance.

Semantic Token

Active

Pending

Verified

sRGB Gamut Coverage 99.8%

Customer	Plan Tier	MRR	APCA Contrast
VL Vercel Labs vercel.com	Enterprise	$14,200	Lc 82.4 · AAA
CF Cloudflare Edge cloudflare.com	Enterprise	$12,800	Lc 76.5 · AA
DD Datadog Metrics datadoghq.com	Scale	$8,400	Lc 68.2 · AA
SB Supabase Cloud supabase.com	Growth	$4,200	Lc 74.0 · AA
ST Stripe Connect stripe.com	Enterprise	$18,900	Lc 85.3 · AAA

Accessibility & Contrast Auditor

Comprehensive side-by-side compliance verification comparing legacy WCAG 2.1 relative luminance against WCAG 3.0 Advanced Perceptual Contrast Algorithm (APCA).

APCA Silver + WCAG 2.1

Color Pair Inputs

Text Foreground

Background

Headline Typography Sample (24px)

Body text readability is evaluated using spatial frequency models and cone photoreceptor saturation curves.

On White (#FFFFFF) 4.5:1

On Dark (#0A0D14) 8.4:1

Optimal Text Ink

White Ink (#FFFFFF)

Dual Audit Metrics

WCAG 2.1 AA PASS

5.28:1

Normal Text AA (4.5:1) PASS

Large Text AA (3.0:1) PASS

Normal Text AAA (7.0:1) FAIL

Large Text AAA (4.5:1) PASS

APCA (WCAG 3.0) BODY PASS

+38.3 Lc

Body Content (|Lc| ≥ 75) FAIL

Fluent Text (|Lc| ≥ 60) FAIL

Large Text (|Lc| ≥ 45) FAIL

Non-Text UI Elements (|Lc| ≥ 15) PASS

Color Vision Deficiency (CVD) Simulation & Contrast Degradation

Audit of contrast ratios when text and background are perceived under cone photoreceptor deficiencies

Machado (2009) Model

Design Token Exporter

Production-ready formats for CSS, Tailwind v3/v4, Figma DTCG, SwiftUI, and Android XML

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