Color information without the clutter.

HexCheck is a focused color utility for designers, developers, marketers, students, and anyone who needs to understand a color quickly.

What HexCheck does

Type a three- or six-digit hexadecimal color into the address bar or the tool itself. HexCheck displays the color as the page background, converts it to common formats, measures relative luminance, checks black and white text contrast, and generates related colors.

Every color has a shareable address. For example, hexcheck.app/1b8e2d opens directly to that green.

Why it exists

Color tools often bury simple answers under dense controls. HexCheck keeps the everyday information in one centered panel while placing advanced formats, accessibility results, exports, saved colors, and recent history in a separate tools window.

Privacy by design

Saved and recent colors are stored locally in your browser. HexCheck does not require an account to use the core tool.