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Centered Suoh

#b50507
Notes

Centered Suoh (#B50507) is a true 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 (359°, 95%, 36%) 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
#b50507
RGB
rgb(181, 5, 7)
HSL
hsl(359, 95%, 36%)
HWB
hwb(359 2% 29%)
OKLCH
oklch(48.7% 0.197 28.7)
HSV
hsv(359, 97%, 71%)
LAB
lab(37.75% 61.43 49.27)
LCH
lch(37.75% 78.75 38.73)
CMYK
cmyk(0%, 97%, 96%, 29%)

Etymology

Centered
adjective

Latin centrum, center — past-participle of center. As a color modifier, centered implies a saturated-and-grounded-and-balanced quality where the hue occupies the visual center of its palette without drift. Sits at the bold-and-balanced end of the grid, parallel to poised and grounded.

Suoh
noun

The Japanese name for sappanwoodCaesalpinia sappan — a Southeast Asian dye source whose heartwood yields a deep red traditionally used in the lining of formal kimono and the inks of Edo-period woodblock printing. The color refers to a fresh suoh-dyed silk: a deep, slightly cool red with the wood-derived warmth of brazilin pigment. Cooler than enji, deeper than akane.

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.

#b50507
Original
#4c4201
Protanopia
#736500
Deuteranopia
#c8000d
Tritanopia
#2b2b2b
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
7.02:1
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
2.99:1

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