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Dressed Coal

#01071b
Notes

Dressed Coal (#01071B) is a deep blue 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 (226°, 93%, 5%) 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
#01071b
RGB
rgb(1, 7, 27)
HSL
hsl(226, 93%, 5%)
HWB
hwb(226 0% 89%)
OKLCH
oklch(13.5% 0.047 260.9)
P3
color(display-p3 0.0081 0.0267 0.1007)
HSV
hsv(226, 96%, 11%)
LAB
lab(2.15% 2.48 -11.52)
LCH
lch(2.15% 11.78 282.14)
CMYK
cmyk(96%, 74%, 0%, 89%)

Etymology

Dressed
adjective

Old French dresser, to arrange — past-participle of dress. As a color modifier, dressed implies a neutral-and-arranged-and-formal quality, the neutral color of Edwardian-period full-formal-and-evening-wear arranged-and-coordinated dress-attire-and-uniform craft-finish. Sits at the neutral-and-traditional end of the grid, parallel to suited and tailored in usage.

Coal
noun

Fossilized Carboniferous plant carbon — peat compressed for hundreds of millions of years until volatiles drove off and carbon concentrations exceeded ninety percent in anthracite. The color refers to a freshly cut anthracite seam: a deep, slightly muted black with the slight metallic luster of high-rank coal. Warmer than obsidian, drier than tar, with the industrial-revolution weight of the fuel that powered the eighteenth and nineteenth centuries.

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.

#01071b
Original
#00091c
Protanopia
#00071b
Deuteranopia
#000c0f
Tritanopia
#070707
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
20.05:1
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
1.05:1

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
##01071B
Display P3
Display P3
color(display-p3 0.0081 0.0267 0.1007)
Inside sRGBOKLCH chroma 0.047

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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