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Quiet Jolly Lagoon

#2dc2da
Notes

Quiet Jolly Lagoon (#2DC2DA) 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 (188°, 70%, 52%) 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
#2dc2da
RGB
rgb(45, 194, 218)
HSL
hsl(188, 70%, 52%)
HWB
hwb(188 18% 15%)
OKLCH
oklch(75.0% 0.122 211.5)
P3
color(display-p3 0.3771 0.7499 0.8422)
HSV
hsv(188, 79%, 85%)
LAB
lab(72.36% -29.36 -22.78)
LCH
lch(72.36% 37.17 217.81)
CMYK
cmyk(79%, 11%, 0%, 15%)

Etymology

Quiet
adjective

Latin quietus, at rest — used as a color modifier since the medieval period for hues that read as restrained. Quiet pink, quiet blue: low saturation combined with optical calmness. Sits across the crisp and hushed buckets where the color is present but doesn't ask for attention.

Jolly
modifier

Old French jolif, festive-and-pretty. As a color modifier, jolly implies a hearty-and-warm-and-festive quality, the visual register of Dickens-Christmas-and-Falstaffian-jolly hand-hearty-and-warm-and-festive Dickens-Christmas-and-Falstaffian-and-Pickwickian jollied-and-hearty-and-warm-and-festive surfaces under Dickens-Christmas-and-Falstaffian-and-Pickwickian goose-and-plum-pudding-and-roaring-hearth Christmas-Eve-light. Sits at the modifier-and-mood end of the grid, parallel to merry and mirth 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.

#2dc2da
Original
#afbbdb
Protanopia
#98aada
Deuteranopia
#00ccc9
Tritanopia
#a4a4a4
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
2.13:1
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
9.84:1

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
##2DC2DA
Display P3
Display P3
color(display-p3 0.3771 0.7499 0.8422)
P3 has subtle headroomOKLCH chroma 0.122

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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