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Plaintive Bothnia

#637a79
Notes

Plaintive Bothnia (#637A79) is a true cyan 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 (177°, 10%, 43%) places it in the muted 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
#637a79
RGB
rgb(99, 122, 121)
HSL
hsl(177, 10%, 43%)
HWB
hwb(177 39% 52%)
OKLCH
oklch(56.1% 0.027 193.1)
P3
color(display-p3 0.4061 0.4758 0.4735)
HSV
hsv(177, 19%, 48%)
LAB
lab(49.44% -8.56 -2.23)
LCH
lch(49.44% 8.85 194.63)
CMYK
cmyk(19%, 0%, 1%, 52%)

Etymology

Plaintive
adjective

Latin plangere, to lament — adjectival suffix -ive. As a color modifier, plaintive implies a hushed-and-sad-and-mourning quality where the hue carries the visual register of folk-song-and-lament sad-and-melancholic mood color-treatment. Sits at the hushed-and-melancholy end of the grid, parallel to mournful and wistful 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.

#637a79
Original
#777879
Protanopia
#727479
Deuteranopia
#5c7b7a
Tritanopia
#757575
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
4.57:1
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
4.59:1

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
##637A79
Display P3
Display P3
color(display-p3 0.4061 0.4758 0.4735)
Inside sRGBOKLCH chroma 0.027

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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