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Phosphorescent Lemonade

#c9bb36
Notes

Phosphorescent Lemonade (#C9BB36) is a true amber 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 (54°, 58%, 50%) 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
#c9bb36
RGB
rgb(201, 187, 54)
HSL
hsl(54, 58%, 50%)
HWB
hwb(54 21% 21%)
OKLCH
oklch(78.1% 0.147 103.2)
HSV
hsv(54, 73%, 79%)
LAB
lab(74.97% -9.68 64.96)
LCH
lch(74.97% 65.67 98.48)
CMYK
cmyk(0%, 7%, 73%, 21%)

Etymology

Phosphorescent
adjective

Greek phōsphóros, light-bringer — adjectival suffix -escent. As a color modifier, phosphorescent implies a saturated-and-cool-glow-after-stimulation quality, the bright cool-green-blue color of Cu-doped-ZnS glow-in-the-dark photoluminescent surfaces. Sits at the bright-and-cool end of the grid, parallel to fluorescent and luminous in usage.

Lemonade
noun

The classic citrus drink — fresh lemon juice diluted with water and sweetener, served chilled in summer. Lemonade refers to the color of fresh-squeezed lemonade in a clear glass: a soft, slightly cool pale yellow with the optical clarity of citrus-juice-and-water. Cooler than mayonnaise.

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.

#c9bb36
Original
#ccb51d
Protanopia
#d0bb3f
Deuteranopia
#d8aea1
Tritanopia
#b4b4b4
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
1.97:1
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
10.64:1

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