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Vibrantcyan

Warm Aqua Velvet

#37b5e9
Notes

Warm Aqua Velvet (#37B5E9) 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 (198°, 80%, 56%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#37b5e9
RGB
rgb(55, 181, 233)
HSL
hsl(198, 80%, 56%)
HWB
hwb(198 22% 9%)
OKLCH
oklch(72.8% 0.130 230.6)
HSV
hsv(198, 76%, 91%)
LAB
lab(69.28% -16.89 -35.67)
LCH
lch(69.28% 39.47 244.67)
CMYK
cmyk(76%, 22%, 0%, 9%)

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.

#37b5e9
Original
#9ab3ec
Protanopia
#83a2e8
Deuteranopia
#00c3c6
Tritanopia
#9e9e9e
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
2.35:1
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
8.95:1

Related Colors

Canvas