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Spectral Weaver

#efa515
Notes

Spectral Weaver (#EFA515) 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 (40°, 87%, 51%) 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
#efa515
RGB
rgb(239, 165, 21)
HSL
hsl(40, 87%, 51%)
HWB
hwb(40 8% 6%)
OKLCH
oklch(77.4% 0.159 75.8)
HSV
hsv(40, 91%, 94%)
LAB
lab(73.10% 17.38 74.02)
LCH
lch(73.10% 76.03 76.79)
CMYK
cmyk(0%, 31%, 91%, 6%)

Etymology

Spectral
adjective

Latin spectrum, appearance — adjectival suffix -al. As a color modifier, spectral implies a saturated-and-rainbow-decomposed-and-pure quality, the bright color of Newton-prism sunlight-decomposed seven-color spectrum band. Sits at the bright-and-pure end of the grid, parallel to prismatic and pure in usage.

Weaver
noun

The family Ploceidae — particularly Ploceus species, the African weavers whose males build elaborate woven nests and sport bright yellow breeding plumage. The color refers to a male southern masked weaver in breeding plumage: a saturated, slightly red yellow with the matte finish of bright carotenoid feathers.

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.

#efa515
Original
#c0a900
Protanopia
#d1bb1e
Deuteranopia
#ff918d
Tritanopia
#aaaaaa
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
2.09:1
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
10.06:1

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