High Contrast Start

Pure black and white plus one strong blue and one warm highlight — a deliberately boring, deliberately safe starting point when accessibility is the first requirement, not an afterthought. Verify your exact pairings in the contrast checker as you extend it.

Colors

Export color codes

Ink #000000

Paper #ffffff

Action Blue #1447e6

Highlight #ffd230

Accessibility snapshot

Each color's WCAG contrast ratio against white and black text — AA means it can carry normal-size text (≥4.5:1) on that background. Test your exact pairings in the contrast checker.

#000000 White text: 21:1 AA Black text: 1:1 —

#ffffff White text: 1:1 — Black text: 21:1 AA

#1447e6 White text: 6.83:1 AA Black text: 3.07:1 —

#ffd230 White text: 1.45:1 — Black text: 14.51:1 AA

Color blindness safety

Every pair in this palette (6 pairs) checked with CIEDE2000 under normal vision plus the four strongest color vision deficiency types. A pair is flagged when it drops below ΔE 10 — the zone where colors get hard to tell apart at a glance.

#ffffff vs #ffd230 Achromatopsia ΔE 8.8 Hard to distinguish

Swatches show the pair as that viewer would see it. Flagged pairs are fine decoratively — just don’t make them the only difference between two states. Explore any pair in the simulator.

In a real interface

Roles assigned by lightness: the lightest color as background, the darkest as text, the first two palette colors as primary and accent.

High Contrast Start

This is how the palette reads when its colors take on interface roles.

Primary action Secondary Badge

CSS variables

CSS

--color-1: #000000;
--color-2: #ffffff;
--color-3: #1447e6;
--color-4: #ffd230;

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

Try it → Generators

Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

Try it →

Make this palette your own

Turn it into a gradient with one click, or start fresh from any of its colors.

Build a gradient from these colors → Play Color Match