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Domestic Kuroshio

#1d0329
Notes

Domestic Kuroshio (#1D0329) is a deep violet 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 (281°, 86%, 9%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1d0329
RGB
rgb(29, 3, 41)
HSL
hsl(281, 86%, 9%)
HWB
hwb(281 1% 84%)
OKLCH
oklch(18.0% 0.078 313.1)
HSV
hsv(281, 93%, 16%)
LAB
lab(4.39% 19.40 -18.83)
LCH
lch(4.39% 27.03 315.86)
CMYK
cmyk(29%, 93%, 0%, 84%)

Etymology

Domestic
adjective

Latin domesticus, of-the-house — derived from domus (house). As a color modifier, domestic implies a neutral-and-household-and-everyday quality, the neutral color of Vermeer-and-Dutch-Genre-painting household-and-everyday interior-and-textile-and-table-still-life finish, often featuring whitewashed walls and earthen-tiled floors. Sits at the neutral-and-traditional end of the grid, parallel to homey and cottage in usage.

Kuroshio
noun

Japanese 黒潮, black current — the warm-water Pacific Ocean current that flows northeast along Japan's eastern coast, named for its deep blue-black color compared with the cooler greener offshore waters. Kuroshio color refers to a deep-water Kuroshio current surface in clear weather: a saturated, slightly cool deep black with the optical complexity of deep-water Rayleigh-scattered light through a thousand-meter water column.

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

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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.

#1d0329
Original
#000e2a
Protanopia
#011028
Deuteranopia
#1c0a15
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
19.14:1
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

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