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Provincial Bivouac

#180a2c
Notes

Provincial Bivouac (#180A2C) is a deep indigo 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 (265°, 63%, 11%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#180a2c
RGB
rgb(24, 10, 44)
HSL
hsl(265, 63%, 11%)
HWB
hwb(265 4% 83%)
OKLCH
oklch(18.8% 0.066 298.9)
P3
color(display-p3 0.0865 0.0418 0.1653)
HSV
hsv(265, 77%, 17%)
LAB
lab(5.36% 15.26 -19.62)
LCH
lch(5.36% 24.85 307.87)
CMYK
cmyk(45%, 77%, 0%, 83%)

Etymology

Provincial
adjective

Latin prōvinciālis, of-a-province — adjectival suffix -al. As a color modifier, provincial implies a neutral-and-regional-and-traditional quality, the neutral color of French-Provincial-Provençal and Italian-Tuscan-Provincial regional-tradition interior-decoration-and-textile surface-finish. Sits at the neutral-and-traditional end of the grid, parallel to regional and country in usage.

Bivouac
noun

German Beiwacht, side-watch — the deep-cool-gray temporary-camp of pre-modern European military campaigns, particularly the Napoleonic-Wars infantry winter-bivouac. Bivouac color refers to a Russian-1812 French-Imperial-Army winter-bivouac at the Berezina-River crossing: a dark cool-gray with the matte finish of cattle-hide-tarpaulin-and-bark improvised shelter against snow-laden Russian-steppe sky.

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.

#180a2c
Original
#00122d
Protanopia
#01112b
Deuteranopia
#131219
Tritanopia
#0f0f0f
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
18.77:1
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
1.12:1

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
##180A2C
Display P3
Display P3
color(display-p3 0.0865 0.0418 0.1653)
Inside sRGBOKLCH chroma 0.066

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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