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Vitreous Gnome Lagoon

#20bcd6
Notes

Vitreous Gnome Lagoon (#20BCD6) 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 (189°, 74%, 48%) 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
#20bcd6
RGB
rgb(32, 188, 214)
HSL
hsl(189, 74%, 48%)
HWB
hwb(189 13% 16%)
OKLCH
oklch(73.2% 0.123 212.8)
P3
color(display-p3 0.3511 0.7265 0.8261)
HSV
hsv(189, 85%, 84%)
LAB
lab(70.26% -28.72 -23.82)
LCH
lch(70.26% 37.32 219.67)
CMYK
cmyk(85%, 12%, 0%, 16%)

Etymology

Vitreous
adjective

Latin vitreus, glass-like — derived from vitrum (glass). As a color modifier, vitreous implies a clear-and-glassy quality where the hue carries the optical clarity of polished crown-glass. Sits at the crisp-and-clear end of the grid, parallel to pellucid and crystalline in usage.

Gnome
modifier

Latin gnomus, earth-elemental-of-Paracelsus. As a color modifier, gnome implies an earth-elemental-and-subterranean-and-mining quality, the visual register of Paracelsian-gnome-and-Alpine-mining-folk hand-earth-elemental-and-subterranean-and-mining Paracelsian-gnome-and-Alpine-mining-folk-and-Renaissance-occult gnome-and-earth-elemental-and-subterranean surfaces under Paracelsian-gnome-and-Alpine-mining-folk-and-Renaissance-occult Alpine-mountain-and-mine-shaft underground-elemental-light. Sits at the modifier-and-myth end of the grid, parallel to sprite and pixie 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.

#20bcd6
Original
#a8b5d8
Protanopia
#91a5d6
Deuteranopia
#00c6c4
Tritanopia
#9d9d9d
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
2.28:1
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
9.23:1

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
##20BCD6
Display P3
Display P3
color(display-p3 0.3511 0.7265 0.8261)
P3 has subtle headroomOKLCH chroma 0.123

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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