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Demure Ebony

#666c57
Notes

Demure Ebony (#666C57) is a true 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 (77°, 11%, 38%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#666c57
RGB
rgb(102, 108, 87)
HSL
hsl(77, 11%, 38%)
HWB
hwb(77 34% 58%)
OKLCH
oklch(52.0% 0.033 120.5)
P3
color(display-p3 0.4043 0.4228 0.3490)
HSV
hsv(77, 19%, 42%)
LAB
lab(44.57% -6.40 11.00)
LCH
lch(44.57% 12.73 120.18)
CMYK
cmyk(6%, 0%, 19%, 58%)

Etymology

Demure
adjective

Old French meür, mature — sharing root with demur (to delay). As a color modifier, demure implies a hushed-and-modest-and-quiet quality, the hushed color of Edwardian-period finishing-school-and-debutante modest-and-quiet-and-restrained dress-attire textile-and-color choice. Sits at the hushed-and-restrained end of the grid, parallel to discreet and modest 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.

#666c57
Original
#6f6956
Protanopia
#6e6958
Deuteranopia
#686a66
Tritanopia
#696969
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
5.46:1
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
3.85:1

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
##666C57
Display P3
Display P3
color(display-p3 0.4043 0.4228 0.3490)
Inside sRGBOKLCH chroma 0.033

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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