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Quickening Mull Goldenrod

#c5dc63
Notes

Quickening Mull Goldenrod (#C5DC63) 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 (71°, 63%, 63%) 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
#c5dc63
RGB
rgb(197, 220, 99)
HSL
hsl(71, 63%, 63%)
HWB
hwb(71 39% 14%)
OKLCH
oklch(85.3% 0.149 118.7)
HSV
hsv(71, 55%, 86%)
LAB
lab(83.94% -24.83 55.91)
LCH
lch(83.94% 61.18 113.95)
CMYK
cmyk(10%, 0%, 55%, 14%)

Etymology

Quickening
adjective

Old English cwic, living / lively — present-participle of quicken. As a color modifier, quickening implies a saturated-and-coming-alive-and-active quality where the hue accelerates visual engagement. Sits at the bright-and-active end of the grid, parallel to animated and invigorating in usage.

Mull
modifier

Middle English mullen, to-grind-or-ponder. As a color modifier, mull implies a slow-pondered-and-warmed-and-spiced quality, the visual register of mulled-wine-and-mulled-thought hand-slow-pondered-and-warmed-and-spiced mulled-wine-and-mulled-cider-and-mulled-thought mulled-and-slow-pondered-and-warmed-and-spiced surfaces under mulled-wine-and-mulled-cider-and-mulled-thought clove-and-cinnamon-and-orange-peel hearth-side-winter-light. Sits at the modifier-and-mood end of the grid, parallel to muse and brood in usage.

Goldenrod
noun

Solidago, the late-summer wildflower of North American meadows whose tall sprays of small yellow flowers signal the end of the growing season. The color refers to the flower head at full bloom: a warm, slightly muted yellow-orange with the matte finish of small clustered florets. Cooler than mustard, deeper than dandelion. The state flower of Kentucky and Nebraska, a pollinator magnet, and the original native dye for early American homespun.

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.

#c5dc63
Original
#e9d157
Protanopia
#e6d26a
Deuteranopia
#cfd1c1
Tritanopia
#cecece
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
1.52:1
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
13.79:1

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