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Vibrant Daylight

#a1b839
Notes

Vibrant Daylight (#A1B839) is a true yellow with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (71°, 53%, 47%) 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
#a1b839
RGB
rgb(161, 184, 57)
HSL
hsl(71, 53%, 47%)
HWB
hwb(71 22% 28%)
OKLCH
oklch(74.1% 0.151 119.2)
HSV
hsv(71, 69%, 72%)
LAB
lab(70.98% -24.98 58.86)
LCH
lch(70.98% 63.94 113.00)
CMYK
cmyk(13%, 0%, 69%, 28%)

Etymology

Vibrant
adjective

From the Latin vibrare, to shake — used as a color word since the seventeenth century for hues that read as alive and resonant. Vibrant orange, vibrant green: the implication is saturation combined with the optical impression of slight motion or energy. Sits at the bright-bucket center alongside vivid and lively.

Daylight
noun

Diffuse light from the sun — including atmospheric scatter, cloud reflection, and ground-bounce. Daylight as a color refers to the warm pale yellow of diffuse light through a north-facing window at noon: a soft, slightly cool warm pale yellow with the optical balance of full-spectrum daylight.

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.

#a1b839
Original
#c4ae25
Protanopia
#c1ae43
Deuteranopia
#aaae9f
Tritanopia
#aaaaaa
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
2.23:1
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
9.43:1

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