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Brilliant Witchhazel

#899c27
Notes

Brilliant Witchhazel (#899C27) 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 (70°, 60%, 38%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#899c27
RGB
rgb(137, 156, 39)
HSL
hsl(70, 60%, 38%)
HWB
hwb(70 15% 39%)
OKLCH
oklch(65.6% 0.139 118.6)
HSV
hsv(70, 75%, 61%)
LAB
lab(60.99% -22.24 55.09)
LCH
lch(60.99% 59.41 111.99)
CMYK
cmyk(12%, 0%, 75%, 39%)

Etymology

Brilliant
adjective

From the Italian brillante, sparkling — used as a color modifier since the seventeenth century for hues that read as optically active beyond their literal saturation. Brilliant green, brilliant blue: the implication is luminance combined with the slight sparkle of a high-refractive surface. Sits at the bright-bucket center alongside vivid and bright.

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.

#899c27
Original
#a6930e
Protanopia
#a49431
Deuteranopia
#919386
Tritanopia
#909090
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
3.07:1
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
6.85:1

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