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Level Limpid

#51edfc
Notes

Level Limpid (#51EDFC) 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 (185°, 97%, 65%) 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
#51edfc
RGB
rgb(81, 237, 252)
HSL
hsl(185, 97%, 65%)
HWB
hwb(185 32% 1%)
OKLCH
oklch(87.1% 0.129 204.4)
P3
color(display-p3 0.5043 0.9170 0.9773)
HSV
hsv(185, 68%, 99%)
LAB
lab(86.67% -35.61 -19.16)
LCH
lch(86.67% 40.44 208.28)
CMYK
cmyk(68%, 6%, 0%, 1%)

Etymology

Level
adjective

Latin libella, small-balance / level-tool — sharing root with libra (balance). As a color modifier, level implies a clear-and-horizontal-true quality where the hue carries the visual register of gravity-perpendicular-and-perfectly-horizontal surface. Sits at the crisp-and-balanced end of the grid, parallel to plumb and flat in usage.

Limpid
noun

An adjectival noun meaning clear and untroubled — used for the soft pale-blue of perfectly transparent water. Limpid color refers to a limpid alpine lake at dawn before any wind: a soft, slightly cool pale blue with the optical clarity of unperturbed 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.

#51edfc
Original
#dae3fd
Protanopia
#c2d1fd
Deuteranopia
#00f6f1
Tritanopia
#cdcdcd
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
1.41:1
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
14.87:1

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
##51EDFC
Display P3
Display P3
color(display-p3 0.5043 0.9170 0.9773)
P3 has subtle headroomOKLCH chroma 0.129

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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