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Ostentatious Witchhazel

#a5ae18
Notes

Ostentatious Witchhazel (#A5AE18) is a true yellow with a warm character. It leans warm, pulling light toward red, orange, and yellow. Naturally inviting, it suits editorial and hospitality contexts. Its HSL profile (64°, 76%, 39%) 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#a5ae18
RGB
rgb(165, 174, 24)
HSL
hsl(64, 76%, 39%)
HWB
hwb(64 9% 32%)
OKLCH
oklch(72.0% 0.156 113.5)
HSV
hsv(64, 86%, 68%)
LAB
lab(68.27% -19.73 66.57)
LCH
lch(68.27% 69.43 106.51)
CMYK
cmyk(5%, 0%, 86%, 32%)

Etymology

Ostentatious
adjective

Latin ostentātiōnis, display — adjectival suffix -ous, derived from ostendere (to show). As a color modifier, ostentatious implies a saturated-and-attention-demanding-and-elaborate quality, the bright color of Belle-Époque-and-Gilded-Age showy-luxury-display interior-decoration. Sits at the bright-and-flamboyant end of the grid, parallel to flamboyant and showy in usage.

Witchhazel
noun

Hamamelis virginiana, the North American shrub whose distinctive yellow ribbon-petaled flowers bloom in late autumn — and whose bark and leaves yield the astringent witch hazel extract. The color refers to a fresh Hamamelis bloom in November: a saturated, slightly red yellow with the satin finish of crinkled-ribbon petal.

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.

#a5ae18
Original
#bca500
Protanopia
#bca829
Deuteranopia
#b1a394
Tritanopia
#a1a1a1
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
2.42:1
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
8.67:1

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