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Unblemished Horus Lagoon

#28aac7
Notes

Unblemished Horus Lagoon (#28AAC7) 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 (191°, 67%, 47%) 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
#28aac7
RGB
rgb(40, 170, 199)
HSL
hsl(191, 67%, 47%)
HWB
hwb(191 16% 22%)
OKLCH
oklch(68.4% 0.113 217.2)
P3
color(display-p3 0.3297 0.6571 0.7671)
HSV
hsv(191, 80%, 78%)
LAB
lab(64.42% -23.93 -24.50)
LCH
lch(64.42% 34.24 225.67)
CMYK
cmyk(80%, 15%, 0%, 22%)

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.

Horus
modifier

Egyptian Heru, falcon-headed-sky-god. As a color modifier, horus implies a falcon-headed-and-Eye-of-Horus quality, the visual register of Egyptian-Horus-and-Edfu-temple hand-falcon-headed-and-Eye-of-Horus Egyptian-Horus-and-Edfu-temple-and-falcon-pharaoh horus-and-falcon-headed-and-Eye-of-Horus surfaces under Egyptian-Horus-and-Edfu-temple-and-falcon-pharaoh Edfu-Aswan-temple-and-falcon-throne falcon-eye-light. Sits at the modifier-and-myth end of the grid, parallel to isis and thoth 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.

#28aac7
Original
#97a5c9
Protanopia
#8296c7
Deuteranopia
#00b4b3
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
2.74:1
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
7.66:1

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
##28AAC7
Display P3
Display P3
color(display-p3 0.3297 0.6571 0.7671)
P3 has subtle headroomOKLCH chroma 0.113

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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