Cool Indigo Silk

#511bb6

Notes

Cool Indigo Silk (#511BB6) is a true indigo with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (261°, 74%, 41%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#511bb6

RGB

rgb(81, 27, 182)

HSL

hsl(261, 74%, 41%)