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Punchy Yunnan

#91a520
Notes

Punchy Yunnan (#91A520) 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 (69°, 68%, 39%) 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#91a520
RGB
rgb(145, 165, 32)
HSL
hsl(69, 68%, 39%)
HWB
hwb(69 13% 35%)
OKLCH
oklch(68.3% 0.150 118.4)
HSV
hsv(69, 81%, 65%)
LAB
lab(64.19% -23.61 60.47)
LCH
lch(64.19% 64.92 111.33)
CMYK
cmyk(12%, 0%, 81%, 35%)

Etymology

Punchy
adjective

A modern adjectival form of punch, to strike sharply. Used as a color word since the early twentieth century for hues that read as highly contrasting and visually loud. Punchy red, punchy yellow: the implication is full saturation combined with optical impact. Sits across the bold and bright buckets, near vivid and striking.

Yunnan
noun

The southwestern Chinese province — and the deep yellow of Yunnan Pu-erh tea liquor and the yellow stripe in the jīnhuáng glaze of Tang-dynasty Yunnan ceramics. Yunnan refers to a fresh-brewed Yunnan Pu-erh in a porcelain cup: a saturated, slightly red-shifted gold-yellow with the optical depth of fermented-tea liquor.

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.

#91a520
Original
#b09b00
Protanopia
#ae9c2e
Deuteranopia
#9a9c8d
Tritanopia
#979797
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
2.76:1
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
7.61:1

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