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Spartan Kohbai

#9b1b7a
Notes

Spartan Kohbai (#9B1B7A) is a true magenta 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 (315°, 70%, 36%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#9b1b7a
RGB
rgb(155, 27, 122)
HSL
hsl(315, 70%, 36%)
HWB
hwb(315 11% 39%)
OKLCH
oklch(47.6% 0.186 341.3)
P3
color(display-p3 0.5578 0.1579 0.4656)
HSV
hsv(315, 83%, 61%)
LAB
lab(36.29% 58.64 -22.11)
LCH
lch(36.29% 62.68 339.34)
CMYK
cmyk(0%, 83%, 21%, 39%)

Etymology

Spartan
adjective

Greek Spartiátēs, of Sparta — adjectival suffix referring to the Lacedaemonian warrior city. As a color modifier, spartan implies a saturated-and-disciplined-and-formal quality, the deep-rich color of Spartan-hoplite military-class crimson-and-bronze armor-and-cloak. Sits at the bold-and-formal end of the grid, parallel to austere and stern in tone.

Kohbai
noun

Japanese 紅梅, red plum-blossom (Prunus mume var. kohbai) — the deep-pink-flowered cultivar of Japanese plum, a traditional New Year color in Heian-period kasane no irome layered silks. Kohbai color refers to a fully bloomed kohbai plum branch in February: a saturated, slightly cool deep magenta with the velvet finish of fresh plum-blossom petals against bare branches in early-spring snow.

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.

#9b1b7a
Original
#28487c
Protanopia
#535d77
Deuteranopia
#a51e4a
Tritanopia
#3d3d3d
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
7.42:1
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
2.83:1

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
##9B1B7A
Display P3
Display P3
color(display-p3 0.5578 0.1579 0.4656)
P3 has visible headroomOKLCH chroma 0.186

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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