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Brilliant Amarillo

#cee37b
Notes

Brilliant Amarillo (#CEE37B) 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 (72°, 65%, 69%) 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
#cee37b
RGB
rgb(206, 227, 123)
HSL
hsl(72, 65%, 69%)
HWB
hwb(72 48% 11%)
OKLCH
oklch(87.8% 0.132 118.6)
HSV
hsv(72, 46%, 89%)
LAB
lab(86.75% -22.47 48.22)
LCH
lch(86.75% 53.19 114.98)
CMYK
cmyk(9%, 0%, 46%, 11%)

Etymology

Brilliant
adjective

From the Italian brillante, sparkling — used as a color modifier since the seventeenth century for hues that read as optically active beyond their literal saturation. Brilliant green, brilliant blue: the implication is luminance combined with the slight sparkle of a high-refractive surface. Sits at the bright-bucket center alongside vivid and bright.

Amarillo
noun

The Spanish word for yellow — and the Texas city named for the surrounding subsoil clay. The color refers to amarillo-dyed Spanish silk: a saturated, slightly red yellow with the satin finish of plant-and-mordant dye. The Spanish cousin of yellow.

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.

#cee37b
Original
#efd972
Protanopia
#ecda80
Deuteranopia
#d7d9cb
Tritanopia
#d7d7d7
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
1.41:1
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
14.90:1

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