Vivid Indigo Halo

#4b00bd

Notes

Vivid Indigo Halo (#4B00BD) is a true indigo with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (264°, 100%, 37%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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

#4b00bd

RGB

rgb(75, 0, 189)

HSL

hsl(264, 100%, 37%)