Jewelbluedeeploud
HSL
240° · 96% · 33%
Cobalt Shine
#0303a6
Notes
Cobalt Shine (#0303A6) is a deep 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 (240°, 96%, 33%) places it in the highly saturated band at a dark 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
#0303a6
RGB
rgb(3, 3, 166)
HSL
hsl(240, 96%, 33%)
Tints & Shades
Click any swatch to exploreHarmonies
Complementary
Split Complementary