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Homespun Coal

#170415
Notes

Homespun Coal (#170415) is a deep violet 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 (306°, 70%, 5%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#170415
RGB
rgb(23, 4, 21)
HSL
hsl(306, 70%, 5%)
HWB
hwb(306 2% 91%)
OKLCH
oklch(15.4% 0.048 331.6)
P3
color(display-p3 0.0805 0.0188 0.0790)
HSV
hsv(306, 83%, 9%)
LAB
lab(2.92% 9.22 -5.60)
LCH
lch(2.92% 10.79 328.69)
CMYK
cmyk(0%, 83%, 9%, 91%)

Etymology

Homespun
adjective

English compound home + past-participle spun — sharing root with spin. As a color modifier, homespun implies a neutral-and-cottage-industry-and-traditional quality, the neutral color of Welsh-and-Scottish-Highland hand-spun-and-hand-woven cottage-industry-and-traditional-craft textile-finish. Sits at the neutral-and-traditional end of the grid, parallel to folksy and homey 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.

#170415
Original
#030916
Protanopia
#080c14
Deuteranopia
#18050a
Tritanopia
#090909
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
19.73:1
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
1.06:1

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
##170415
Display P3
Display P3
color(display-p3 0.0805 0.0188 0.0790)
Inside sRGBOKLCH chroma 0.048

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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