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Caffeinated Rapeseed

#acb42a
Notes

Caffeinated Rapeseed (#ACB42A) 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 (63°, 62%, 44%) 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
#acb42a
RGB
rgb(172, 180, 42)
HSL
hsl(63, 62%, 44%)
HWB
hwb(63 16% 29%)
OKLCH
oklch(74.0% 0.152 113.0)
HSV
hsv(63, 77%, 71%)
LAB
lab(70.58% -19.12 64.01)
LCH
lch(70.58% 66.80 106.63)
CMYK
cmyk(4%, 0%, 77%, 29%)

Etymology

Caffeinated
adjective

Modern French caféine — past-participle of caffeinate. As a color modifier, caffeinated implies a saturated-and-jumpy-and-active quality, the bright color of Red-Bull-and-Monster energy-drink-can label-design saturated-and-energizing palette. Sits at the bright-and-active end of the grid, parallel to jazzed and wired in usage.

Rapeseed
noun

Brassica napus, the oilseed crop grown across Europe whose mass plantings cover landscapes in saturated yellow during May bloom. The color refers to a UK rapeseed field in May: a saturated, slightly cool deep yellow with the matte finish of densely packed cruciferous flowers covering the entire horizon.

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.

#acb42a
Original
#c2ab03
Protanopia
#c2ae36
Deuteranopia
#b8a99a
Tritanopia
#a8a8a8
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
2.25:1
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
9.32:1

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