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Hygienic Grace Lagoon

#3bb0c9
Notes

Hygienic Grace Lagoon (#3BB0C9) is a true cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (191°, 57%, 51%) 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
#3bb0c9
RGB
rgb(59, 176, 201)
HSL
hsl(191, 57%, 51%)
HWB
hwb(191 23% 21%)
OKLCH
oklch(70.3% 0.107 215.0)
P3
color(display-p3 0.3704 0.6808 0.7760)
HSV
hsv(191, 71%, 79%)
LAB
lab(66.67% -24.16 -22.13)
LCH
lch(66.67% 32.77 222.49)
CMYK
cmyk(71%, 12%, 0%, 21%)

Etymology

Hygienic
adjective

Greek hygieinós, healthful — derived from Hygieia (goddess of health). As a color modifier, hygienic implies a clear-and-medical-clean quality, the crisp color of Mid-Century-Modern clinical-and-hospital interior-architecture surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and sterile in usage.

Grace
modifier

Latin gratia, favor-or-thankfulness. As a color modifier, grace implies a flowing-and-elegant-and-blessed quality, the visual register of Botticelli-Three-Graces-and-Apollonian-grace hand-flowing-and-elegant-and-blessed Botticelli-Three-Graces-and-Apollonian-and-Renaissance-classical graced-and-flowing-and-elegant-and-blessed surfaces under Botticelli-Three-Graces-and-Apollonian-and-Renaissance-classical chiton-and-laurel-wreath-and-fountain Florentine-pavilion-light. Sits at the modifier-and-mood end of the grid, parallel to charm and bliss 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.

#3bb0c9
Original
#9eaaca
Protanopia
#8b9cc9
Deuteranopia
#00b9b8
Tritanopia
#999999
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
8.24:1

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
##3BB0C9
Display P3
Display P3
color(display-p3 0.3704 0.6808 0.7760)
P3 has subtle headroomOKLCH chroma 0.107

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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