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Sullen Narangi

#642504
Notes

Sullen Narangi (#642504) is a deep orange with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (21°, 92%, 20%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#642504
RGB
rgb(100, 37, 4)
HSL
hsl(21, 92%, 20%)
HWB
hwb(21 2% 61%)
OKLCH
oklch(35.3% 0.100 43.3)
P3
color(display-p3 0.3625 0.1606 0.0573)
HSV
hsv(21, 96%, 39%)
LAB
lab(23.81% 26.82 32.72)
LCH
lch(23.81% 42.31 50.66)
CMYK
cmyk(0%, 63%, 96%, 61%)

Etymology

Sullen
adjective

Old French solain, solitary via Anglo-French solein. As a color modifier, sullen implies a deep-and-cool-and-withholding quality, the dark cool-gray of Norwegian-fjord mid-winter atmospheric-overcast and saturated-saltwater-cliff in late-November light. Sits at the deep-and-cool end of the grid, parallel to gloomy and saturnine in atmospheric tone.

Narangi
noun

The Persian nāranj and Hindi narangi — both meaning bitter orange, the Citrus aurantium that traveled westward from India through the Arab agricultural revolution to give English the word orange itself. The color refers to a ripe bitter orange: a saturated, slightly red orange with the matte finish of thick citrus rind. The etymological root of every Western language's word for the color.

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.

#642504
Original
#373000
Protanopia
#473e02
Deuteranopia
#6f151f
Tritanopia
#303030
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
11.61:1
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
1.81:1

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
##642504
Display P3
Display P3
color(display-p3 0.3625 0.1606 0.0573)
P3 has subtle headroomOKLCH chroma 0.100

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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