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Towering Gin

#0b399c
Notes

Towering Gin (#0B399C) 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°, 87%, 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#0b399c
RGB
rgb(11, 57, 156)
HSL
hsl(221, 87%, 33%)
HWB
hwb(221 4% 39%)
OKLCH
oklch(38.8% 0.168 262.7)
P3
color(display-p3 0.1000 0.2200 0.5889)
HSV
hsv(221, 93%, 61%)
LAB
lab(27.84% 26.46 -57.51)
LCH
lch(27.84% 63.31 294.70)
CMYK
cmyk(93%, 63%, 0%, 39%)

Etymology

Towering
adjective

Old French tour, tower via Latin turris — present-participle of tower. As a color modifier, towering implies a deep-and-vertical-and-architectural quality, the dark cool-gray of Salisbury-Cathedral-and-Chartres-Cathedral spire-and-tower against the sky. Sits at the deep-and-architectural end of the grid, parallel to imposing and looming.

Gin
noun

The juniper-flavored distilled spirit — and the saturated deep blue of Bombay Sapphire-bottle glass and Hendrick's-style apothecary-style packaging. Gin color refers to a fresh-poured gin bottle in a bar light: a saturated, slightly cool deep blue with the high gloss of dyed glass.

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.

#0b399c
Original
#00489f
Protanopia
#003b9a
Deuteranopia
#005365
Tritanopia
#363636
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
10.10:1
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
2.08:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##0B399C
Display P3
Display P3
color(display-p3 0.1000 0.2200 0.5889)
P3 has subtle headroomOKLCH chroma 0.168

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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