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Becomingly Mineshaft

#0d0d20
Notes

Becomingly Mineshaft (#0D0D20) is a deep blue 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 (240°, 42%, 9%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#0d0d20
RGB
rgb(13, 13, 32)
HSL
hsl(240, 42%, 9%)
HWB
hwb(240 5% 87%)
OKLCH
oklch(17.1% 0.039 281.5)
P3
color(display-p3 0.0510 0.0510 0.1205)
HSV
hsv(240, 59%, 13%)
LAB
lab(4.31% 4.77 -12.14)
LCH
lch(4.31% 13.05 291.46)
CMYK
cmyk(59%, 59%, 0%, 87%)

Etymology

Becomingly
adjective

Old English be-cuman, to come about — adverbial-and-adjectival suffix -ly. As a color modifier, becomingly implies a neutral-and-flattering-and-suitable quality where the hue carries the visual register of well-suited-and-flattering coordinated color-decision. Sits at the neutral-and-traditional end of the grid, parallel to suitably and flatteringly in usage.

Mineshaft
noun

Old English menere, miner — the deep-soot-black interior of a coal-mine vertical shaft, where the anthracite and bituminous coal-seam dust coats every surface. Mineshaft color refers to a Pennsylvania anthracite-mine mineshaft interior under a head-lamp: a saturated, slightly cool deep black with the matte finish of multi-decade coal-dust-and-creosote sediment on hand-hewn timber-and-stone shaft-walls.

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.

#0d0d20
Original
#061021
Protanopia
#050e20
Deuteranopia
#071114
Tritanopia
#0e0e0e
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
19.17:1
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
1.10:1

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
##0D0D20
Display P3
Display P3
color(display-p3 0.0510 0.0510 0.1205)
Inside sRGBOKLCH chroma 0.039

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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