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Antiseptic Cloak Lagoon

#426d83
Notes

Antiseptic Cloak Lagoon (#426D83) is a true azure with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (200°, 33%, 39%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#426d83
RGB
rgb(66, 109, 131)
HSL
hsl(200, 33%, 39%)
HWB
hwb(200 26% 49%)
OKLCH
oklch(51.2% 0.059 231.8)
P3
color(display-p3 0.2974 0.4231 0.5050)
HSV
hsv(200, 50%, 51%)
LAB
lab(43.85% -8.46 -16.78)
LCH
lch(43.85% 18.79 243.24)
CMYK
cmyk(50%, 17%, 0%, 49%)

Etymology

Antiseptic
adjective

Greek anti- (against) plus sēptikós (putrefying) — adjectival suffix -ic. As a color modifier, antiseptic implies a clear-and-disinfected-and-clinical quality, the crisp color of medical-laboratory and operating-theater hand-scrub-and-sanitizer surfaces. Sits at the crisp-and-clean end of the grid, parallel to sterile and sanitary in usage.

Cloak
modifier

Old Northern French cloque, bell-or-cape. As a color modifier, cloak implies a heavy-shoulder-mantle-and-bell-shaped quality, the visual register of Anglo-Saxon-and-medieval-cloak hand-heavy-shoulder-mantle-and-bell-shaped Anglo-Saxon-and-medieval-cloak-and-pilgrim-cloak cloak-and-heavy-shoulder-mantle surfaces under Anglo-Saxon-and-medieval-cloak-and-pilgrim-cloak Canterbury-and-Compostela-pilgrimage wool-cloak-light. Sits at the modifier-and-textile end of the grid, parallel to cape and cowl 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.

#426d83
Original
#626c84
Protanopia
#596583
Deuteranopia
#227374
Tritanopia
#656565
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).
AAon White
5.60:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.75:1

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
##426D83
Display P3
Display P3
color(display-p3 0.2974 0.4231 0.5050)
Inside sRGBOKLCH chroma 0.059

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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