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Healthful Saturn Lagoon

#0ac0d9
Notes

Healthful Saturn Lagoon (#0AC0D9) is a true cyan with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (187°, 91%, 45%) 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
#0ac0d9
RGB
rgb(10, 192, 217)
HSL
hsl(187, 91%, 45%)
HWB
hwb(187 4% 15%)
OKLCH
oklch(74.1% 0.128 211.3)
P3
color(display-p3 0.3425 0.7417 0.8379)
HSV
hsv(187, 95%, 85%)
LAB
lab(71.40% -30.73 -23.74)
LCH
lch(71.40% 38.83 217.69)
CMYK
cmyk(95%, 12%, 0%, 15%)

Etymology

Healthful
adjective

Old English hǣlth, health — adjectival suffix -ful. As a color modifier, healthful implies a clear-and-vital-and-wholesome quality where the hue carries the visual register of fresh-air-and-sunlight outdoor health-promoting environment. Sits at the crisp-and-wholesome end of the grid, parallel to salubrious and wholesome in usage.

Saturn
modifier

Latin Saturnus, Roman-god-of-time-and-sixth-planet. As a color modifier, saturn implies a Roman-god-of-time-and-ringed-sixth-planet quality, the visual register of Roman-Saturn-and-Cassini-rings hand-Roman-god-of-time-and-ringed-sixth-planet Roman-Saturn-and-Cassini-rings-and-Saturnalia saturn-and-Roman-god-of-time-and-ringed-planet surfaces under Roman-Saturn-and-Cassini-rings-and-Saturnalia Saturnalia-festival-and-ringed-gas-giant ringed-planet-light. Sits at the modifier-and-zodiac end of the grid, parallel to jupiter and neptune 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.

#0ac0d9
Original
#acb9da
Protanopia
#94a7d9
Deuteranopia
#00cac8
Tritanopia
#9b9b9b
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
2.20:1
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
9.55:1

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
##0AC0D9
Display P3
Display P3
color(display-p3 0.3425 0.7417 0.8379)
P3 has subtle headroomOKLCH chroma 0.128

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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