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Mellowed Logwood

#676c8b
Notes

Mellowed Logwood (#676C8B) is a true blue 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 (232°, 15%, 47%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#676c8b
RGB
rgb(103, 108, 139)
HSL
hsl(232, 15%, 47%)
HWB
hwb(232 40% 45%)
OKLCH
oklch(53.9% 0.049 277.5)
P3
color(display-p3 0.4075 0.4229 0.5354)
HSV
hsv(232, 26%, 55%)
LAB
lab(46.27% 5.42 -17.63)
LCH
lch(46.27% 18.45 287.09)
CMYK
cmyk(26%, 22%, 0%, 45%)

Etymology

Mellowed
adjective

Old English mealu, meal / soft — past-participle of mellow. As a color modifier, mellowed implies a hushed-and-softened-and-deepened quality where the hue carries the visual register of Burgundy-and-Bordeaux multi-decade fully-mellowed-and-deepened wine-cellar maturation finished-state. Sits at the hushed-and-aged end of the grid, parallel to aged and seasoned in usage.

Logwood
noun

Central American Haematoxylum campechianum — a tropical legume tree native to Yucatán and Belize, whose heartwood was the colonial-era principal source of haematein and hematoxylin dyes (also used for histology staining). Logwood color refers to a freshly logwood-mordant-dyed wool: a saturated, slightly cool deep blue-violet with the matte finish of haematein-on-iron-mordanted woolen fiber. Also the campeche of European calligraphy ink.

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.

#676c8b
Original
#636f8c
Protanopia
#616c8a
Deuteranopia
#5e7276
Tritanopia
#6d6d6d
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
5.13:1
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
4.09:1

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
##676C8B
Display P3
Display P3
color(display-p3 0.4075 0.4229 0.5354)
Inside sRGBOKLCH chroma 0.049

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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