colors
Back to gallery
Jewelazuredeep

Deep Azure Gleam

#183b88
Notes

Deep Azure Gleam (#183B88) is a deep azure 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 (221°, 70%, 31%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#183b88
RGB
rgb(24, 59, 136)
HSL
hsl(221, 70%, 31%)
HWB
hwb(221 9% 47%)
OKLCH
oklch(37.7% 0.135 263.1)
HSV
hsv(221, 82%, 53%)
LAB
lab(27.01% 17.83 -46.54)
LCH
lch(27.01% 49.84 290.96)
CMYK
cmyk(82%, 57%, 0%, 47%)

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#183b88
Original
#00458b
Protanopia
#003b86
Deuteranopia
#004e5b
Tritanopia
#393939
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon White
10.40:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.02:1

Related Colors

Canvas