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Croft Ebony

#666758
Notes

Croft Ebony (#666758) is a true yellow 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 (64°, 8%, 37%) places it in the muted band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#666758
RGB
rgb(102, 103, 88)
HSL
hsl(64, 8%, 37%)
HWB
hwb(64 35% 60%)
OKLCH
oklch(50.8% 0.023 110.3)
P3
color(display-p3 0.4007 0.4038 0.3508)
HSV
hsv(64, 15%, 40%)
LAB
lab(43.11% -3.31 8.35)
LCH
lch(43.11% 8.98 111.62)
CMYK
cmyk(1%, 0%, 15%, 60%)

Etymology

Croft
adjective

Old English croft, small-enclosed-field — adjectival usage of croft. As a color modifier, croft implies a neutral-and-Scottish-Highland-and-traditional quality, the neutral color of Scottish-Highland-Crofter hand-spun-and-hand-woven crofting-and-pasture traditional-craft textile-finish. Sits at the neutral-and-traditional end of the grid, parallel to homespun and folksy in usage.

Ebony
noun

The genus Diospyros — particularly D. ebenum of Sri Lanka and D. crassiflora of West Africa — whose dense black heartwood has been carved for ornament since the Egyptian Old Kingdom. The color refers to polished African blackwood: a deep, slightly warm matte black with the satin finish of close-grained hardwood. Warmer than obsidian, drier than pitch, with the carving weight of a wood that sinks in water and sharpens its own tools.

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.

#666758
Original
#6a6657
Protanopia
#6a6659
Deuteranopia
#686563
Tritanopia
#666666
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).
AAon White
5.76:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.65:1

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
##666758
Display P3
Display P3
color(display-p3 0.4007 0.4038 0.3508)
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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