Tested tool guide
Tested browser tools
Checked August 16, 2026
What HTML Color Names Chart does, with a checked example
This chart is a finite lookup table for the CSS named-color vocabulary, presented as 148 searchable rows. Each row places the keyword beside its six-digit HEX value and a rendered swatch, letting a user check spelling, numeric equivalence, and approximate appearance in one view. Entering a name filters the displayed set instead of converting a free-form color. The point most often missed is that 148 names do not represent 148 unique colors: aliases exist, including aqua and cyan, which both correspond to #00FFFF.
Worked example
A concrete input and expected output from the current implementation.
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Expected output
A matching entry for rebeccapurple showing #663399 and a purple swatch.
The CSS keyword rebeccapurple is defined as #663399. Its hexadecimal byte pairs are 66, 33, and 99, equal to RGB channel values 102, 51, and 153 respectively.