Coolblue
HSL
231° · 64% · 41%
Deep Cobalt Crystal
#263aab
Notes
Deep Cobalt Crystal (#263AAB) is a true blue with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (231°, 64%, 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.
HEX
#263aab
RGB
rgb(38, 58, 171)
HSL
hsl(231, 64%, 41%)
Tints & Shades
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Complementary
Split Complementary