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Homemade Kachikoshi

#27030c
Notes

Homemade Kachikoshi (#27030C) 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 (345°, 86%, 8%) 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 teal. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#27030c
RGB
rgb(39, 3, 12)
HSL
hsl(345, 86%, 8%)
HWB
hwb(345 1% 85%)
OKLCH
oklch(18.2% 0.063 9.0)
P3
color(display-p3 0.1374 0.0201 0.0480)
HSV
hsv(345, 92%, 15%)
LAB
lab(4.73% 17.83 2.43)
LCH
lch(4.73% 17.99 7.77)
CMYK
cmyk(0%, 92%, 69%, 85%)

Etymology

Homemade
adjective

English compound home + past-participle made — sharing root with make. As a color modifier, homemade implies a neutral-and-handcrafted-and-domestic quality, the neutral color of American-and-English-cottage hand-made-and-home-craft household-textile-and-pottery surface-finish. Sits at the neutral-and-traditional end of the grid, parallel to handmade and handcrafted in usage.

Kachikoshi
noun

Japanese 褐返, charcoal-overdye — a late-Edo-period color name for the deep-iron-gray of kachi-iro (vat-blue)-overdyed-on-charcoal cotton, popular among samurai-class everyday wear. Kachikoshi color refers to a samurai-class kachikoshi-dyed Edo-komon fine-pattern cotton: a dark blue-gray with the matte finish of multi-bath aizome-and-charcoal overdye on commoner cotton.

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.

#27030c
Original
#0b0b0c
Protanopia
#15130b
Deuteranopia
#2c0006
Tritanopia
#0b0b0b
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
19.01:1
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
1.10:1

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
##27030C
Display P3
Display P3
color(display-p3 0.1374 0.0201 0.0480)
Inside sRGBOKLCH chroma 0.063

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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