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Provincial Augite

#180723
Notes

Provincial Augite (#180723) 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 (276°, 67%, 8%) 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
#180723
RGB
rgb(24, 7, 35)
HSL
hsl(276, 67%, 8%)
HWB
hwb(276 3% 86%)
OKLCH
oklch(17.4% 0.059 309.8)
P3
color(display-p3 0.0853 0.0305 0.1314)
HSV
hsv(276, 80%, 14%)
LAB
lab(4.22% 12.77 -14.53)
LCH
lch(4.22% 19.34 311.31)
CMYK
cmyk(31%, 80%, 0%, 86%)

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.

Augite
noun

(Ca,Mg,Fe)₂(Si,Al)₂O₆ pyroxene-group mineral — the principal mafic mineral of basalt-and-gabbro lava-flows, including the Hawaii Big Island basalt flows and the Deccan Traps of India. Augite color refers to a freshly cleaved Etna augite phenocryst face: a saturated, slightly cool deep black with the glassy finish of monoclinic-system iron-magnesium-calcium pyroxene. The Greek genus name augē (luster) refers to its bright cleavage-reflection.

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.

#180723
Original
#010e24
Protanopia
#040f22
Deuteranopia
#170c13
Tritanopia
#0d0d0d
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
19.20:1
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
1.09:1

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
##180723
Display P3
Display P3
color(display-p3 0.0853 0.0305 0.1314)
Inside sRGBOKLCH chroma 0.059

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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