colors
Back to gallery

Smooth Hera Lagoon

#27bdd8
Notes

Smooth Hera Lagoon (#27BDD8) 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 (189°, 69%, 50%) 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
#27bdd8
RGB
rgb(39, 189, 216)
HSL
hsl(189, 69%, 50%)
HWB
hwb(189 15% 15%)
OKLCH
oklch(73.6% 0.122 213.6)
P3
color(display-p3 0.3608 0.7305 0.8336)
HSV
hsv(189, 82%, 85%)
LAB
lab(70.72% -28.06 -24.21)
LCH
lch(70.72% 37.06 220.79)
CMYK
cmyk(82%, 12%, 0%, 15%)

Etymology

Smooth
adjective

Old English smōþ, level, polished — used as a color modifier since the seventeenth century for hues that read as continuous without texture or break. Smooth tan, smooth gray: moderate saturation combined with optical evenness. Sits in the crisp-bucket alongside even.

Hera
modifier

Greek Ἥρα, queen-of-the-Olympian-gods. As a color modifier, hera implies a peacock-feather-and-queen-of-gods quality, the visual register of Olympian-Hera-and-Argos-temple hand-peacock-feather-and-queen-of-gods Olympian-Hera-and-Argos-temple-and-Heraion-of-Samos hera-and-peacock-feather-and-queen-of-gods surfaces under Olympian-Hera-and-Argos-temple-and-Heraion-of-Samos Polyclitus-and-Argive-and-Samian peacock-throne-light. Sits at the modifier-and-myth end of the grid, parallel to zeus and diana 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.

#27bdd8
Original
#a9b6da
Protanopia
#92a6d8
Deuteranopia
#00c7c5
Tritanopia
#9f9f9f
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
2.24:1
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
9.36:1

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
##27BDD8
Display P3
Display P3
color(display-p3 0.3608 0.7305 0.8336)
P3 has subtle headroomOKLCH chroma 0.122

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.

Related Colors

Canvas