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Serviceable Stir Lagoon

#3db1d0
Notes

Serviceable Stir Lagoon (#3DB1D0) 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 (193°, 61%, 53%) 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
#3db1d0
RGB
rgb(61, 177, 208)
HSL
hsl(193, 61%, 53%)
HWB
hwb(193 24% 18%)
OKLCH
oklch(70.9% 0.110 219.4)
P3
color(display-p3 0.3756 0.6848 0.8018)
HSV
hsv(193, 71%, 82%)
LAB
lab(67.27% -22.20 -25.07)
LCH
lch(67.27% 33.49 228.48)
CMYK
cmyk(71%, 15%, 0%, 18%)

Etymology

Serviceable
adjective

Latin servītium, service — adjectival suffix -able. As a color modifier, serviceable implies a clear-and-fit-for-purpose-and-durable quality where the hue carries the visual register of long-lasting-and-functional everyday-use design. Sits at the crisp-and-functional end of the grid, parallel to practical and utilitarian in usage.

Stir
modifier

Old English styrian, to-move-or-agitate. As a color modifier, stir implies a slow-moved-and-rippled-and-agitated quality, the visual register of cauldron-and-tea-cup-stir hand-slow-moved-and-rippled-and-agitated cauldron-and-tea-cup-and-pot-au-feu stirred-and-slow-moved-and-rippled-and-agitated surfaces under cauldron-and-tea-cup-and-pot-au-feu kitchen-hearth-and-witch's-fire-and-parlor-tea-table simmer-and-eddy-light. Sits at the modifier-and-mood end of the grid, parallel to swirl and eddy 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.

#3db1d0
Original
#9eacd2
Protanopia
#899dd0
Deuteranopia
#00bbbb
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
2.50:1
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
8.40:1

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
##3DB1D0
Display P3
Display P3
color(display-p3 0.3756 0.6848 0.8018)
P3 has subtle headroomOKLCH chroma 0.110

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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