Hex colour picker.
Pick a colour, copy any format, and build a palette that works. Every value is calculated in your browser — no account, no upload, no tracking.
#4C8DFF
Shades & tints click to select
Harmonies colour-theory pairs
Contrast check WCAG 2.1
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Readable text preview
Aim for 4.5:1 for normal text and 3:1 for large text (WCAG AA).