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Restrained Yùhuáng

#646141
Notes

Restrained Yùhuáng (#646141) is a deep 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 (55°, 21%, 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
#646141
RGB
rgb(100, 97, 65)
HSL
hsl(55, 21%, 32%)
HWB
hwb(55 25% 61%)
OKLCH
oklch(48.7% 0.048 103.5)
P3
color(display-p3 0.3901 0.3808 0.2693)
HSV
hsv(55, 35%, 39%)
LAB
lab(40.64% -4.34 18.72)
LCH
lch(40.64% 19.21 103.05)
CMYK
cmyk(0%, 3%, 35%, 61%)

Etymology

Restrained
adjective

Latin re-stringere, to pull back — past-participle of restrain. As a color modifier, restrained implies a hushed-and-pulled-back-and-controlled quality where the hue carries the visual register of intentionally-modulated-and-restricted color-amplitude treatment. Sits at the hushed-and-restrained end of the grid, parallel to modulated and withheld in usage.

Yùhuáng
noun

Literally jade-yellow in Chinese — a soft, slightly cool pale yellow used in ceremonial hetian nephrite jade and in the silks of Qing-dynasty consort robes. The color refers to a polished pale-yellow nephrite cabochon: a soft, slightly cool pale yellow with the satin finish of fine jade.

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.

#646141
Original
#675f3f
Protanopia
#686142
Deuteranopia
#695d59
Tritanopia
#5f5f5f
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
6.31:1
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
3.33:1

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
##646141
Display P3
Display P3
color(display-p3 0.3901 0.3808 0.2693)
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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