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Pellucid Wave Lagoon

#285d73
Notes

Pellucid Wave Lagoon (#285D73) is a deep cyan with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (198°, 48%, 30%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#285d73
RGB
rgb(40, 93, 115)
HSL
hsl(198, 48%, 30%)
HWB
hwb(198 16% 55%)
OKLCH
oklch(45.2% 0.066 228.2)
P3
color(display-p3 0.2118 0.3600 0.4422)
HSV
hsv(198, 65%, 45%)
LAB
lab(36.96% -10.23 -17.71)
LCH
lch(36.96% 20.46 239.98)
CMYK
cmyk(65%, 19%, 0%, 55%)

Etymology

Pellucid
adjective

Latin pellūcidus, transparent — derived from per-lūcēre (to shine through). As a color modifier, pellucid implies a clear-and-translucent quality where the hue reads with optical clarity and minimal turbidity. Sits at the crisp-and-clear end of the grid, parallel to lucid and translucent in usage.

Wave
modifier

Old English wagian, to move to and fro. As a color modifier, wave implies a periodic-and-rolling quality, the visual register of Pacific-and-Atlantic mid-ocean wind-driven rolling-swell-and-foam mid-distance horizon surfaces under open sky. Sits at the modifier-and-place end of the grid, parallel to surge and tide in usage.

Lagoon
noun

A shallow body of saltwater partially or fully enclosed by a barrier — coral atoll lagoons in the Pacific, Venice's Laguna Veneta, the Florida Keys' backcountry. The color refers to the average reflectance of a calm tropical lagoon at midday: a saturated, slightly muted blue-green with the optical clarity of shallow water over white sand. Brighter than reef, cooler than aquamarine, with the postcard weight of a Pacific atoll seen from above.

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.

#285d73
Original
#525b74
Protanopia
#475473
Deuteranopia
#006364
Tritanopia
#535353
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).
AAAon White
7.23:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.90:1

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
##285D73
Display P3
Display P3
color(display-p3 0.2118 0.3600 0.4422)
Inside sRGBOKLCH chroma 0.066

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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