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Smoky Swamphen

#3d2774
Notes

Smoky Swamphen (#3D2774) is a deep indigo 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 (257°, 50%, 30%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#3d2774
RGB
rgb(61, 39, 116)
HSL
hsl(257, 50%, 30%)
HWB
hwb(257 15% 55%)
OKLCH
oklch(34.6% 0.126 291.6)
P3
color(display-p3 0.2265 0.1566 0.4383)
HSV
hsv(257, 66%, 45%)
LAB
lab(22.67% 30.20 -40.88)
LCH
lch(22.67% 50.82 306.45)
CMYK
cmyk(47%, 66%, 0%, 55%)

Etymology

Smoky
adjective

An adjectival form of smoke, used as a color word since at least the fourteenth century. Smoky implies a slightly muted, slightly hazed quality — as if the color were seen through a layer of suspended particulate. Used across both deep and neutral buckets: a smoky black has slightly less density than pure black; a smoky gray has slightly less coolness than pure gray.

Swamphen
noun

Australasian Porphyrio melanotus — a large Rallidae shorebird with dark blue-violet plumage and a brilliant red beak-and-frontal-shield. Swamphen color refers to a Porphyrio melanotus in profile in a Murray-Darling wetland: a saturated, slightly cool deep blue-violet with the iridescent satin finish of structurally colored feather barbs. Closely related to the Pukeko of New Zealand and the Purple Gallinule of the Americas.

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.

#3d2774
Original
#003776
Protanopia
#003572
Deuteranopia
#2d3949
Tritanopia
#313131
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
12.06:1
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
1.74:1

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
##3D2774
Display P3
Display P3
color(display-p3 0.2265 0.1566 0.4383)
P3 has subtle headroomOKLCH chroma 0.126

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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