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Vitreous Nova Lagoon

#0cabc9
Notes

Vitreous Nova Lagoon (#0CABC9) 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 (190°, 89%, 42%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#0cabc9
RGB
rgb(12, 171, 201)
HSL
hsl(190, 89%, 42%)
HWB
hwb(190 5% 21%)
OKLCH
oklch(68.4% 0.120 216.5)
P3
color(display-p3 0.3042 0.6605 0.7744)
HSV
hsv(190, 94%, 79%)
LAB
lab(64.50% -25.54 -25.51)
LCH
lch(64.50% 36.10 224.97)
CMYK
cmyk(94%, 15%, 0%, 21%)

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.

Nova
modifier

Latin nova, new-or-newly-bright-star. As a color modifier, nova implies a sudden-bright-and-newly-erupted-and-flaring quality, the visual register of Tycho-Brahe-and-Kepler-supernova-nova hand-sudden-bright-and-newly-erupted Tycho-Brahe-and-Kepler-and-Cassiopeia-A nova-and-sudden-bright-and-flaring surfaces under Tycho-Brahe-and-Kepler-and-Cassiopeia-A late-Renaissance-observatory-and-naked-eye sudden-stellar-light. Sits at the modifier-and-cosmic end of the grid, parallel to flare and spark 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.

#0cabc9
Original
#97a5cb
Protanopia
#8195c9
Deuteranopia
#00b6b4
Tritanopia
#8b8b8b
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
2.73:1
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
7.68:1

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
##0CABC9
Display P3
Display P3
color(display-p3 0.3042 0.6605 0.7744)
P3 has subtle headroomOKLCH chroma 0.120

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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