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Glowy Curcuma

#8fb309
Notes

Glowy Curcuma (#8FB309) is a true yellow with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (73°, 90%, 37%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#8fb309
RGB
rgb(143, 179, 9)
HSL
hsl(73, 90%, 37%)
HWB
hwb(73 4% 30%)
OKLCH
oklch(71.4% 0.173 123.0)
HSV
hsv(73, 95%, 70%)
LAB
lab(68.09% -31.78 68.20)
LCH
lch(68.09% 75.24 114.99)
CMYK
cmyk(20%, 0%, 95%, 30%)

Etymology

Glowy
adjective

Old English glōwan, to glow — adjectival suffix -y. As a color modifier, glowy implies a saturated-and-soft-emitting-and-warm quality, the bright color of fireside-and-candle-lit interior atmospheric-warmth surface emission. Sits at the bright-and-warm end of the grid, parallel to glowing and luminous in usage.

Curcuma
noun

The Linnaean genus name for turmeric — Curcuma longa — used in pigment vocabulary for the pure curcumin yellow extracted from the rhizome. Curcuma as a color refers specifically to the pigment isolated from C. longa: a saturated, slightly cool deep yellow with the matte finish of plant-derived pigment. The botanical-Latin cousin of haldi.

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

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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.

#8fb309
Original
#bea700
Protanopia
#baa625
Deuteranopia
#97a998
Tritanopia
#9f9f9f
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).
Failon White
2.44:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
8.62:1

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