ContrastKit

A small toolbox for checking and building accessible color palettes — WCAG 2.x and APCA contrast, full-palette testing, color extraction from photos, tonal scales, and live mockup previews.

Contrast Checker Test a single foreground/background pair against WCAG 2.x and APCA. Palette Test every pair in a color palette at once, tune with sliders, and export as tokens. Image Picker Pull a palette out of a photo and fine-tune it by dragging markers on the image. Mockups Preview a palette on real UI layouts, with WCAG contrast called out on each one. Scale Turn one color into a 50–950 scale and see which steps work as text or as a background.

Curious how WCAG and APCA actually work? See About.