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Reposeful Faun Lagoon

#4bbcd9
Notes

Reposeful Faun Lagoon (#4BBCD9) 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 (192°, 65%, 57%) 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
#4bbcd9
RGB
rgb(75, 188, 217)
HSL
hsl(192, 65%, 57%)
HWB
hwb(192 29% 15%)
OKLCH
oklch(74.2% 0.109 217.9)
P3
color(display-p3 0.4198 0.7278 0.8375)
HSV
hsv(192, 65%, 85%)
LAB
lab(71.19% -22.98 -23.97)
LCH
lch(71.19% 33.20 226.20)
CMYK
cmyk(65%, 13%, 0%, 15%)

Etymology

Reposeful
adjective

Latin repōnere, to put back — adjectival suffix -ful. As a color modifier, reposeful implies a clear-and-restful-and-still quality, the calm color of pre-modern monastic cloister-and-refectory meditative-and-silent interior architecture. Sits at the crisp-and-calm end of the grid, parallel to peaceful and placid in usage.

Faun
modifier

Latin Faunus, Roman-half-goat-rural-deity. As a color modifier, faun implies a half-goat-and-pastoral-and-Arcadian quality, the visual register of Roman-Faunus-and-Arcadian-pastoral-faun hand-half-goat-and-pastoral-and-Arcadian Roman-Faunus-and-Arcadian-pastoral-faun-and-Pan faun-and-half-goat-and-pastoral-and-Arcadian surfaces under Roman-Faunus-and-Arcadian-pastoral-faun-and-Pan Lupercalia-and-Arcadia-and-pipes-of-Pan pastoral-Arcadian-light. Sits at the modifier-and-myth end of the grid, parallel to satyr and dryad 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.

#4bbcd9
Original
#a9b7db
Protanopia
#95a8d9
Deuteranopia
#00c6c5
Tritanopia
#a6a6a6
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
2.21:1
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
9.49:1

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
##4BBCD9
Display P3
Display P3
color(display-p3 0.4198 0.7278 0.8375)
P3 has subtle headroomOKLCH chroma 0.109

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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