Jewelblue
HSL
236° · 81% · 38%
Cobalt Ripple
#121daf
Notes
Cobalt Ripple (#121DAF) is a true blue 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 (236°, 81%, 38%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.
HEX
#121daf
RGB
rgb(18, 29, 175)
HSL
hsl(236, 81%, 38%)