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Unblemished Mace Lagoon

#39b5d7
Notes

Unblemished Mace Lagoon (#39B5D7) 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 (193°, 66%, 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
#39b5d7
RGB
rgb(57, 181, 215)
HSL
hsl(193, 66%, 53%)
HWB
hwb(193 22% 16%)
OKLCH
oklch(72.0% 0.116 220.4)
P3
color(display-p3 0.3745 0.7001 0.8283)
HSV
hsv(193, 73%, 84%)
LAB
lab(68.62% -22.54 -26.85)
LCH
lch(68.62% 35.06 229.99)
CMYK
cmyk(73%, 16%, 0%, 16%)

Etymology

Unblemished
adjective

Old French blesmir, to wound — negative-prefix un- plus past-participle of blemish. As a color modifier, unblemished implies a clear-and-flawless quality where the hue carries no defect or imperfection. Sits at the crisp-and-clean end of the grid, parallel to pristine and spotless in usage.

Mace
modifier

Latin macir, outer-aril-of-nutmeg. As a color modifier, mace implies a Banda-Islands-aril-and-orange-red-spice quality, the visual register of Banda-Islands-and-Spice-Islands-mace hand-Banda-Islands-aril-and-orange-red-spice Banda-Islands-and-Spice-Islands-mace-and-Maluku-aril mace-and-Banda-Islands-aril surfaces under Banda-Islands-and-Spice-Islands-mace-and-Maluku-aril Banda-Islands-and-Run-and-Maluku Spice-Islands-aril-light. Sits at the modifier-and-flavor end of the grid, parallel to nutmeg and clove 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.

#39b5d7
Original
#a0b0d9
Protanopia
#8ba1d7
Deuteranopia
#00c0c0
Tritanopia
#9d9d9d
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
2.40:1
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
8.76:1

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
##39B5D7
Display P3
Display P3
color(display-p3 0.3745 0.7001 0.8283)
P3 has subtle headroomOKLCH chroma 0.116

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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