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Buttoned Athens Lagoon

#28aed1
Notes

Buttoned Athens Lagoon (#28AED1) 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 (192°, 68%, 49%) 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
#28aed1
RGB
rgb(40, 174, 209)
HSL
hsl(192, 68%, 49%)
HWB
hwb(192 16% 18%)
OKLCH
oklch(69.8% 0.119 220.6)
HSV
hsv(192, 81%, 82%)
LAB
lab(66.00% -22.69 -27.61)
LCH
lch(66.00% 35.73 230.59)
CMYK
cmyk(81%, 17%, 0%, 18%)

Etymology

Buttoned
adjective

Old French bouton, button — past-participle of button. As a color modifier, buttoned implies a clear-and-fastened-and-formal quality, the crisp color of Edwardian-period formal-attire fully-fastened-and-formally-dressed gentleman's-attire. Sits at the crisp-and-finished end of the grid, parallel to trim and pressed in usage.

Athens
modifier

Greek Ἀθῆναι, Athens. As a color modifier, athens implies an Acropolis-and-philosophical-city-state quality, the visual register of Athenian-Classical-City-State hand-built Acropolis-and-Parthenon-and-marble-temple-and-pottery Doric-and-Ionic-and-Corinthian surfaces under Athenian-Acropolis-and-Parthenon classical Aegean-marble-temple light. Sits at the modifier-and-cultural end of the grid, parallel to sparta and greek 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.

#28aed1
Original
#99a9d3
Protanopia
#8399d1
Deuteranopia
#00b9b9
Tritanopia
#949494
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
2.60:1
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
8.07:1

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