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Buttoned Savory Lagoon

#40bde0
Notes

Buttoned Savory Lagoon (#40BDE0) 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°, 72%, 56%) 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
#40bde0
RGB
rgb(64, 189, 224)
HSL
hsl(193, 72%, 56%)
HWB
hwb(193 25% 12%)
OKLCH
oklch(74.5% 0.118 220.5)
P3
color(display-p3 0.3995 0.7312 0.8631)
HSV
hsv(193, 71%, 88%)
LAB
lab(71.46% -22.89 -27.39)
LCH
lch(71.46% 35.69 230.12)
CMYK
cmyk(71%, 16%, 0%, 12%)

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.

Savory
modifier

Latin satureia, peppery-Mediterranean-herb. As a color modifier, savory implies a peppery-Mediterranean-herb-and-Provençal-bouquet quality, the visual register of Provençal-bouquet-garni-and-summer-savory hand-peppery-Mediterranean-herb-and-Provençal-bouquet Provençal-bouquet-garni-and-summer-savory-and-herbes-de-Provence savory-and-peppery-Mediterranean-herb surfaces under Provençal-bouquet-garni-and-summer-savory-and-herbes-de-Provence Provençal-and-Tuscan-and-Catalan herb-garden-light. Sits at the modifier-and-flavor end of the grid, parallel to hyssop and lovage 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.

#40bde0
Original
#a8b8e2
Protanopia
#92a8e0
Deuteranopia
#00c8c8
Tritanopia
#a5a5a5
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
2.19:1
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
9.57:1

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
##40BDE0
Display P3
Display P3
color(display-p3 0.3995 0.7312 0.8631)
P3 has subtle headroomOKLCH chroma 0.118

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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