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Salubrious Aerial

#285d7f
Notes

Salubrious Aerial (#285D7F) is a deep 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 (203°, 52%, 33%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#285d7f
RGB
rgb(40, 93, 127)
HSL
hsl(203, 52%, 33%)
HWB
hwb(203 16% 50%)
OKLCH
oklch(45.8% 0.079 239.8)
HSV
hsv(203, 69%, 50%)
LAB
lab(37.50% -5.98 -24.24)
LCH
lch(37.50% 24.97 256.15)
CMYK
cmyk(69%, 27%, 0%, 50%)

Etymology

Salubrious
adjective

Latin salūbris, healthful — adjectival suffix -ous. As a color modifier, salubrious implies a clear-and-healthful-and-fresh quality, the crisp color of Alpine-and-Sea-air health-resort and Mediterranean-coast spa-and-thalassotherapy outdoor environment. Sits at the crisp-and-wholesome end of the grid, parallel to healthful and bracing in usage.

Aerial
noun

Of the air or sky — used in art-historical vocabulary for aerial perspective (the technique of using cooler, paler colors for distant elements to create depth). Aerial color refers to the saturated pale blue of distant mountains in clear atmosphere: a soft, slightly cool pale blue with the optical brightness of atmospheric Rayleigh scattering at distance.

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

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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.

#285d7f
Original
#4d5d81
Protanopia
#41547e
Deuteranopia
#006669
Tritanopia
#545454
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).
AAAon White
7.09:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.96:1

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