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Sumptuous Qīng

#37a039
Notes

Sumptuous Qīng (#37A039) is a true green 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 (121°, 49%, 42%) places it in the balanced 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#37a039
RGB
rgb(55, 160, 57)
HSL
hsl(121, 49%, 42%)
HWB
hwb(121 22% 37%)
OKLCH
oklch(62.3% 0.171 143.5)
P3
color(display-p3 0.3386 0.6190 0.2792)
HSV
hsv(121, 66%, 63%)
LAB
lab(58.27% -50.63 43.76)
LCH
lch(58.27% 66.92 139.16)
CMYK
cmyk(66%, 0%, 64%, 37%)

Etymology

Sumptuous
adjective

Latin sūmptuōsus, expensive — derived from sūmptus (expense). As a color modifier, sumptuous implies a saturated-and-rich-and-luxurious quality, the deep-rich color of Burgundy-and-Champagne-Court late-medieval silk-and-velvet livery in the Très-Riches-Heures manuscript tradition. Sits at the bold-and-saturated end of the grid, parallel to opulent and lavish.

Qīng
noun

The classical Chinese word for blue-green — one of the five Chinese cardinal colors, corresponding to the east, spring, and the dragon. Qīng spans modern Chinese green and blue, encompassing everything from forest leaves to deep-sea water in pre-modern color vocabulary. The color refers to a qīng-cí (blue-green celadon) glaze: a saturated, slightly muted deep green-blue.

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.

#37a039
Original
#a3912d
Protanopia
#978942
Deuteranopia
#1f9c8a
Tritanopia
#828282
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).
AA Largeon White
3.36:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
6.25:1

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
##37A039
Display P3
Display P3
color(display-p3 0.3386 0.6190 0.2792)
P3 has subtle headroomOKLCH chroma 0.171

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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