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Luminous Goldfinch

#efa42b
Notes

Luminous Goldfinch (#EFA42B) is a true amber with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (37°, 86%, 55%) 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 azure. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#efa42b
RGB
rgb(239, 164, 43)
HSL
hsl(37, 86%, 55%)
HWB
hwb(37 17% 6%)
OKLCH
oklch(77.4% 0.153 73.3)
HSV
hsv(37, 82%, 94%)
LAB
lab(72.94% 18.38 68.25)
LCH
lch(72.94% 70.68 74.92)
CMYK
cmyk(0%, 31%, 82%, 6%)

Etymology

Luminous
adjective

Latin lūminōsus, full of light — adjectival suffix -ous, derived from lūmen (light). As a color modifier, luminous implies a saturated-and-light-emitting quality where the hue carries internal-glow visual register. Sits at the bright-and-saturated end of the grid, parallel to radiant and resplendent in usage.

Goldfinch
noun

Carduelis carduelis, the European goldfinch whose male plumage features bright yellow wing bars and a red face mask. The color refers to the yellow wing bar of a fresh-molted goldfinch: a saturated, slightly red yellow with the matte finish of carotenoid-pigmented feathers. Brighter than canary.

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.

#efa42b
Original
#bea80d
Protanopia
#d0ba30
Deuteranopia
#ff918d
Tritanopia
#ababab
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
2.10:1
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
10.02:1

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