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Buttoned Clove Ocean

#51dded
Notes

Buttoned Clove Ocean (#51DDED) 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 (186°, 81%, 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#51dded
RGB
rgb(81, 221, 237)
HSL
hsl(186, 81%, 62%)
HWB
hwb(186 32% 7%)
OKLCH
oklch(82.9% 0.120 205.9)
P3
color(display-p3 0.4801 0.8553 0.9187)
HSV
hsv(186, 66%, 93%)
LAB
lab(81.60% -32.38 -18.89)
LCH
lch(81.60% 37.49 210.27)
CMYK
cmyk(66%, 7%, 0%, 7%)

Etymology

Buttoned
adjective

Old French bouton, button — past-participle of button. As a color modifier, buttoned implies a clear-and-fastened-and-formal quality, the crisp color of Edwardian-period formal-attire fully-fastened-and-formally-dressed gentleman's-attire. Sits at the crisp-and-finished end of the grid, parallel to trim and pressed in usage.

Clove
modifier

Latin clāvus, nail-shaped-aromatic-bud. As a color modifier, clove implies a warm-pungent-and-Indonesian-Spice-Island quality, the visual register of Indonesian-Spice-Island-and-Zanzibar-clove hand-warm-pungent-and-Indonesian-Spice-Island Indonesian-Spice-Island-and-Zanzibar-clove-and-Banda-Islands clove-and-warm-pungent-and-Indonesian-Spice-Island surfaces under Indonesian-Spice-Island-and-Zanzibar-clove-and-Banda-Islands Banda-Islands-and-Zanzibar-and-Maluku Spice-Islands-light. Sits at the modifier-and-flavor end of the grid, parallel to nutmeg and anise in usage.

Ocean
noun

The body of saltwater that covers seventy percent of Earth's surface — a single connected mass divided by convention into Atlantic, Pacific, Indian, Southern, and Arctic. The color refers to the average reflectance of mid-depth temperate ocean: a saturated, slightly green-shifted deep blue with the optical depth of a body of water that absorbs all light below the photic zone. Deeper than mediterranean, cooler than peacock.

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.

#51dded
Original
#cbd5ee
Protanopia
#b5c4ed
Deuteranopia
#00e6e2
Tritanopia
#c0c0c0
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
1.63:1
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
12.92:1

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
##51DDED
Display P3
Display P3
color(display-p3 0.4801 0.8553 0.9187)
P3 has subtle headroomOKLCH chroma 0.120

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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