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Cool Sky Fold

#99eef3
Notes

Cool Sky Fold (#99EEF3) is a soft cyan with a pastel character. It reads calm and airy, with enough chroma to feel intentional rather than washed out. Its HSL profile (183°, 79%, 78%) places it in the highly saturated band at a light lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#99eef3
RGB
rgb(153, 238, 243)
HSL
hsl(183, 79%, 78%)
HWB
hwb(183 60% 5%)
OKLCH
oklch(89.7% 0.083 200.5)
HSV
hsv(183, 37%, 95%)
LAB
lab(89.11% -24.40 -10.55)
LCH
lch(89.11% 26.58 203.38)
CMYK
cmyk(37%, 2%, 0%, 5%)

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.

#99eef3
Original
#e3e7f4
Protanopia
#d3dbf4
Deuteranopia
#74f4ef
Tritanopia
#dcdcdc
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
1.32:1
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
15.88:1

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Canvas