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Demure Umbria

#645b3d
Notes

Demure Umbria (#645B3D) is a deep amber 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 (46°, 24%, 32%) places it in the muted 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#645b3d
RGB
rgb(100, 91, 61)
HSL
hsl(46, 24%, 32%)
HWB
hwb(46 24% 61%)
OKLCH
oklch(47.2% 0.046 93.4)
P3
color(display-p3 0.3862 0.3581 0.2534)
HSV
hsv(46, 39%, 39%)
LAB
lab(38.78% -1.33 18.64)
LCH
lch(38.78% 18.69 94.08)
CMYK
cmyk(0%, 9%, 39%, 61%)

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.

Umbria
noun

The Italian region — and the terra di Siena and terra d'ombra (umber) earth pigments mined there since the Renaissance. Umbria refers to a freshly ground raw umber pigment in oil: a soft, slightly muted warm dark brown with the matte finish of iron-and-manganese earth. Cooler than sienna, deeper than tabacco.

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.

#645b3d
Original
#615a3b
Protanopia
#645d3e
Deuteranopia
#6a5753
Tritanopia
#5b5b5b
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
6.76:1
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
3.11:1

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
##645B3D
Display P3
Display P3
color(display-p3 0.3862 0.3581 0.2534)
Inside sRGBOKLCH chroma 0.046

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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