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Noble Karashi

#b33a17
Notes

Noble Karashi (#B33A17) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (13°, 77%, 40%) places it in the highly saturated band at a mid 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b33a17
RGB
rgb(179, 58, 23)
HSL
hsl(13, 77%, 40%)
HWB
hwb(13 9% 30%)
OKLCH
oklch(52.0% 0.163 35.9)
HSV
hsv(13, 87%, 70%)
LAB
lab(42.27% 47.52 46.07)
LCH
lch(42.27% 66.19 44.11)
CMYK
cmyk(0%, 68%, 87%, 30%)

Etymology

Noble
adjective

Latin nōbilis, well-known / illustrious — sharing root with gnōscere (to know). As a color modifier, noble implies a saturated-and-dignified-and-aristocratic quality, the deep-rich color of pre-modern European noble-class hereditary-aristocratic livery-and-armorial bearings. Sits at the bold-and-aristocratic end of the grid, parallel to aristocratic and highborn in usage.

Karashi
noun

The Japanese word for prepared mustard — a sharper, more horseradish-leaning mustard than its Western counterpart, served as a condiment with natto and oden. The color refers to fresh karashi paste on a small dish: a saturated, slightly muted yellow-orange with the dusty finish of mustard-seed powder. Warmer than mustard, drier than turmeric.

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.

#b33a17
Original
#5e5310
Protanopia
#7c6e0f
Deuteranopia
#c51034
Tritanopia
#515151
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).
AAon White
5.94:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.53:1

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