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Crisp Aqua Silk

#15bde4
Notes

Crisp Aqua Silk (#15BDE4) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (191°, 83%, 49%) places it in the highly saturated band at a mid 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
#15bde4
RGB
rgb(21, 189, 228)
HSL
hsl(191, 83%, 49%)
HWB
hwb(191 8% 11%)
OKLCH
oklch(73.9% 0.132 220.2)
HSV
hsv(191, 91%, 89%)
LAB
lab(70.98% -25.24 -30.37)
LCH
lch(70.98% 39.49 230.27)
CMYK
cmyk(91%, 17%, 0%, 11%)

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.

#15bde4
Original
#a5b8e6
Protanopia
#8ca6e4
Deuteranopia
#00caca
Tritanopia
#9c9c9c
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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Canvas