ColorLab

Interactive Color Theory & Accessibility Toolkit

Color Selection

Hex Code

Lightness

R

G

B

Color Harmonies

Complementary

Analogous

Triadic

Tetradic

Monochromatic

Contrast Checker

Text

Background

Sample Text

Ratio: 4.5:1

AA AAA

Vision Simulator

Simulation Preview

Vision Test Preview

Simulates how people with different vision deficiencies see colors.