Which color names are matched?

The 148 standard CSS named colors, matched by closest RGB distance.

What input formats work?

Hex like #4a90d9 or #abc, and rgb() such as rgb(74, 144, 217).

Find the nearest CSS named color for any hex or RGB value.

Hex or RGB color

Nearest CSS color

cornflowerblue

#6495ed

Enter a hex or RGB color and get the closest of the 148 standard CSS color names, with a swatch and its hex.

Which color names are matched?: The 148 standard CSS named colors, matched by closest RGB distance.
What input formats work?: Hex like #4a90d9 or #abc, and rgb() such as rgb(74, 144, 217).