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Lit Cove

#42c4f9
Notes

Lit Cove (#42C4F9) 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 (197°, 94%, 62%) 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
#42c4f9
RGB
rgb(66, 196, 249)
HSL
hsl(197, 94%, 62%)
HWB
hwb(197 26% 2%)
OKLCH
oklch(77.2% 0.133 229.7)
P3
color(display-p3 0.4139 0.7583 0.9563)
HSV
hsv(197, 73%, 98%)
LAB
lab(74.49% -18.25 -36.23)
LCH
lch(74.49% 40.57 243.26)
CMYK
cmyk(73%, 21%, 0%, 2%)

Etymology

Lit
adjective

The past participle of light — short and modern. Used as a color word since the late twentieth century for hues that read as if they were illuminated. Lit yellow, lit pink: the implication is luminance combined with the slight optical impression of an internal light source. Sits in the bright-bucket extreme alongside electric.

Cove
noun

A small coastal indentation sheltered from open ocean — particularly the small coves along the Atlantic coast of Britain, Ireland, and the American Northeast. Cove color refers to a sheltered Cornish cove at high tide: a soft, slightly cool deep blue-green with the optical clarity of sheltered Atlantic water.

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.

#42c4f9
Original
#a9c1fc
Protanopia
#90aff8
Deuteranopia
#00d3d6
Tritanopia
#acacac
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
2.00:1
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
10.50:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##42C4F9
Display P3
Display P3
color(display-p3 0.4139 0.7583 0.9563)
P3 has subtle headroomOKLCH chroma 0.133

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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