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Defined Cove

#279fa4
Notes

Defined Cove (#279FA4) is a true cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (182°, 62%, 40%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#279fa4
RGB
rgb(39, 159, 164)
HSL
hsl(182, 62%, 40%)
HWB
hwb(182 15% 36%)
OKLCH
oklch(64.2% 0.100 199.2)
P3
color(display-p3 0.3099 0.6146 0.6370)
HSV
hsv(182, 76%, 64%)
LAB
lab(59.80% -29.68 -11.89)
LCH
lch(59.80% 31.97 201.83)
CMYK
cmyk(76%, 3%, 0%, 36%)

Etymology

Defined
adjective

Latin dēfīnīre, to set bounds — past-participle of define. As a color modifier, defined implies a clear-and-edge-distinct-and-precise quality where the hue carries the visual register of sharp-bounded-and-clearly-delimited surface. Sits at the crisp-and-clear end of the grid, parallel to crisp and sharp in usage.

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.

#279fa4
Original
#9398a5
Protanopia
#818ba5
Deuteranopia
#00a5a0
Tritanopia
#868686
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).
AA Largeon White
3.19:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
6.58:1

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
##279FA4
Display P3
Display P3
color(display-p3 0.3099 0.6146 0.6370)
P3 has subtle headroomOKLCH chroma 0.100

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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