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Spirited Vireo

#a1b628
Notes

Spirited Vireo (#A1B628) 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°, 64%, 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
#a1b628
RGB
rgb(161, 182, 40)
HSL
hsl(69, 64%, 44%)
HWB
hwb(69 16% 29%)
OKLCH
oklch(73.6% 0.159 118.1)
HSV
hsv(69, 78%, 71%)
LAB
lab(70.31% -24.87 64.07)
LCH
lch(70.31% 68.72 111.21)
CMYK
cmyk(12%, 0%, 78%, 29%)

Etymology

Spirited
adjective

An adjectival form of spirit — used as a color modifier since the seventeenth century for hues that read as animate and characterful. Spirited orange, spirited green: the implication is saturation combined with personality, a color that feels like it has agency. Sits at the bright-bucket center alongside lively and vibrant.

Vireo
noun

The genus Vireo — small North American songbirds with yellow-tinted plumage. Particularly V. flavifrons (yellow-throated vireo) whose males have bright yellow throats and breasts. The color refers to a yellow-throated vireo's breast: a soft, slightly cool yellow with the matte finish of feather pigment.

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.

#a1b628
Original
#c2ac00
Protanopia
#c0ad36
Deuteranopia
#abac9c
Tritanopia
#a7a7a7
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
2.27:1
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
9.24:1

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