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Sanitary Bothnia

#28a399
Notes

Sanitary Bothnia (#28A399) is a true cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (175°, 61%, 40%) 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
#28a399
RGB
rgb(40, 163, 153)
HSL
hsl(175, 61%, 40%)
HWB
hwb(175 16% 36%)
OKLCH
oklch(64.9% 0.104 186.7)
P3
color(display-p3 0.3180 0.6301 0.5986)
HSV
hsv(175, 75%, 64%)
LAB
lab(60.73% -34.74 -4.29)
LCH
lch(60.73% 35.00 187.03)
CMYK
cmyk(75%, 0%, 6%, 36%)

Etymology

Sanitary
adjective

Latin sānitās, health — adjectival suffix -ary. As a color modifier, sanitary implies a clear-and-clean-and-medical quality, the crisp color of Bauhaus-and-Modern clinical-and-hospital interior-architecture white-tile-and-stainless-steel surfaces. Sits at the crisp-and-clean end of the grid, parallel to hygienic and sterile in usage.

Bothnia
noun

The Gulf of Bothnia — the northernmost arm of the Baltic Sea between Sweden and Finland. Bothnia color refers to mid-depth Gulf of Bothnia water at midsummer: a saturated, slightly cool deep blue with the optical complexity of low-salinity high-latitude brackish water.

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.

#28a399
Original
#9a9a99
Protanopia
#898d9a
Deuteranopia
#00a7a0
Tritanopia
#888888
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).
AA Largeon White
3.09:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
6.79:1

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
##28A399
Display P3
Display P3
color(display-p3 0.3180 0.6301 0.5986)
P3 has subtle headroomOKLCH chroma 0.104

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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