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Sterile Gnome Lagoon

#09b1d4
Notes

Sterile Gnome Lagoon (#09B1D4) 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°, 92%, 43%) 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
#09b1d4
RGB
rgb(9, 177, 212)
HSL
hsl(190, 92%, 43%)
HWB
hwb(190 4% 17%)
OKLCH
oklch(70.3% 0.126 218.9)
P3
color(display-p3 0.3139 0.6837 0.8160)
HSV
hsv(190, 96%, 83%)
LAB
lab(66.71% -24.96 -28.19)
LCH
lch(66.71% 37.65 228.47)
CMYK
cmyk(96%, 17%, 0%, 17%)

Etymology

Sterile
adjective

Latin sterilis, barren / not-fertile — sharing root with Greek steiros (barren). As a color modifier, sterile implies a clear-and-medical-clean-and-stripped quality, the crisp color of operating-theater surgical-environment white-and-stainless-steel surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and hygienic 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.

#09b1d4
Original
#9bacd6
Protanopia
#849bd4
Deuteranopia
#00bdbc
Tritanopia
#909090
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
2.55:1
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
8.25:1

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
##09B1D4
Display P3
Display P3
color(display-p3 0.3139 0.6837 0.8160)
P3 has subtle headroomOKLCH chroma 0.126

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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