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Smothering Tobi

#3f0b0e
Notes

Smothering Tobi (#3F0B0E) is a deep red 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 (357°, 70%, 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#3f0b0e
RGB
rgb(63, 11, 14)
HSL
hsl(357, 70%, 15%)
HWB
hwb(357 4% 75%)
OKLCH
oklch(24.7% 0.080 22.3)
P3
color(display-p3 0.2251 0.0599 0.0619)
HSV
hsv(357, 83%, 25%)
LAB
lab(11.47% 25.14 11.86)
LCH
lch(11.47% 27.80 25.26)
CMYK
cmyk(0%, 83%, 78%, 75%)

Etymology

Smothering
adjective

Old English smorian, to suffocate — present-participle of smother. As a color modifier, smothering implies a deep-and-overwhelming-and-pressing quality where the hue is dominated by an enveloping darkness. Sits at the deep-and-overwhelming end of the grid, parallel to suffocating with kinetic register.

Tobi
noun

Named for the tobi — the black kite (Milvus migrans) — the slightly muted red-brown of the bird's plumage and of the tobi-iro dye traditionally used in working-class Edo dress. The color refers to a freshly-dyed tobi-iro cotton: a soft, slightly muted red-brown with the matte finish of plant-and-iron mordant. Drier than rust, warmer than maroon.

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.

#3f0b0e
Original
#1a170e
Protanopia
#27220c
Deuteranopia
#46000d
Tritanopia
#161616
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
16.59:1
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
1.27:1

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
##3F0B0E
Display P3
Display P3
color(display-p3 0.2251 0.0599 0.0619)
Inside sRGBOKLCH chroma 0.080

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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