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Neoncyanloud

Sky Laser

#40f9ff
Notes

Sky Laser (#40F9FF) is a true cyan with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (182°, 100%, 63%) 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
#40f9ff
RGB
rgb(64, 249, 255)
HSL
hsl(182, 100%, 63%)
HWB
hwb(182 25% 0%)
OKLCH
oklch(89.7% 0.141 198.3)
HSV
hsv(182, 75%, 100%)
LAB
lab(89.88% -42.20 -15.92)
LCH
lch(89.88% 45.11 200.67)
CMYK
cmyk(75%, 2%, 0%, 0%)

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.

#40f9ff
Original
#e7edff
Protanopia
#ccdaff
Deuteranopia
#00fffa
Tritanopia
#d2d2d2
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
1.30:1
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
16.21:1

Related Colors

Canvas