Jewelblue
HSL
240° · 70% · 38%
Warm Cobalt Thread
#1d1da5
Notes
Warm Cobalt Thread (#1D1DA5) 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 (240°, 70%, 38%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.
HEX
#1d1da5
RGB
rgb(29, 29, 165)
HSL
hsl(240, 70%, 38%)
Tints & Shades
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Complementary
Split Complementary