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Custom Bronzite

#23281c
Notes

Custom Bronzite (#23281C) is a deep lime with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (85°, 18%, 13%) places it in the muted 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#23281c
RGB
rgb(35, 40, 28)
HSL
hsl(85, 18%, 13%)
HWB
hwb(85 11% 84%)
OKLCH
oklch(26.8% 0.023 126.3)
P3
color(display-p3 0.1409 0.1563 0.1144)
HSV
hsv(85, 30%, 16%)
LAB
lab(15.27% -5.02 7.18)
LCH
lch(15.27% 8.76 124.93)
CMYK
cmyk(13%, 0%, 30%, 84%)

Etymology

Custom
adjective

Latin cōnsuētūdō, habit / usage — adjectival usage of custom. As a color modifier, custom implies a neutral-and-individually-fitted-and-bespoke quality, the neutral color of Savile-Row-tailoring and Gucci-and-Hermès-Made-to-Measure individually-fitted-and-bespoke craft-finish. Sits at the neutral-and-traditional end of the grid, parallel to bespoke and tailored in usage.

Bronzite
noun

(Mg,Fe)SiO₃ iron-bearing pyroxene — a deep-bronze-gray mineral mined principally at Kraubath in Austria and Webster in North Carolina, the namesake of the Bronze Age. Bronzite color refers to a freshly cleaved Kraubath bronzite schiller-cleavage face: a dark cool-gray with the metallic finish of orthorhombic-system iron-magnesium pyroxene with chatoyant-iron schiller.

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.

#23281c
Original
#29261b
Protanopia
#29261d
Deuteranopia
#242725
Tritanopia
#262626
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
15.09:1
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
1.39:1

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
##23281C
Display P3
Display P3
color(display-p3 0.1409 0.1563 0.1144)
Inside sRGBOKLCH chroma 0.023

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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