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Plutonian Espresso

#3a2811
Notes

Plutonian Espresso (#3A2811) is a deep orange 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 (34°, 55%, 15%) 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 azure. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#3a2811
RGB
rgb(58, 40, 17)
HSL
hsl(34, 55%, 15%)
HWB
hwb(34 7% 77%)
OKLCH
oklch(29.3% 0.045 71.2)
P3
color(display-p3 0.2168 0.1597 0.0813)
HSV
hsv(34, 71%, 23%)
LAB
lab(17.73% 5.38 18.16)
LCH
lch(17.73% 18.94 73.50)
CMYK
cmyk(0%, 31%, 71%, 77%)

Etymology

Plutonian
adjective

From Pluto, the Roman god of the underworld (Greek Plouton). As a color modifier, plutonian implies the cool deep darkness of the underworld realms, with literary-classical register. Sits at the deep-and-cool end of the grid, parallel to Hadean and cooler than infernal.

Espresso
noun

The concentrated coffee shot extracted under pressure — Italian café standard since the late nineteenth century, with the dark roast that distinguishes it from filter coffee. The color refers to a fresh-pulled espresso in a white cup: a deep, slightly red-shifted near-black with the slight crema of suspended oils on the surface. Warmer than coal, glossier than mascara, with the café weight of a beverage measured in twenty-five-milliliter shots.

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.

#3a2811
Original
#2e290f
Protanopia
#332d12
Deuteranopia
#402423
Tritanopia
#2a2a2a
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
14.08:1
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
1.49:1

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
##3A2811
Display P3
Display P3
color(display-p3 0.2168 0.1597 0.0813)
Inside sRGBOKLCH chroma 0.045

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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