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Chivalrous Kachi

#2149ac
Notes

Chivalrous Kachi (#2149AC) is a true azure with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (223°, 68%, 40%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#2149ac
RGB
rgb(33, 73, 172)
HSL
hsl(223, 68%, 40%)
HWB
hwb(223 13% 33%)
OKLCH
oklch(44.1% 0.165 264.1)
HSV
hsv(223, 81%, 67%)
LAB
lab(34.12% 23.53 -56.86)
LCH
lch(34.12% 61.53 292.48)
CMYK
cmyk(81%, 58%, 0%, 33%)

Etymology

Chivalrous
adjective

Old French chevaleros, knightly — adjectival suffix -ous, derived from cheval (horse). As a color modifier, chivalrous implies a saturated-and-knightly-and-gallant quality, the deep-rich color of medieval-Romance chanson-de-geste hero-and-troubadour song tradition. Sits at the bold-and-chivalrous end of the grid, parallel to gallant and knightly.

Kachi
noun

Japanese kachi-iro (褐色 or 勝色) — victory color, the deep blue-black favored by samurai for ceremonial dress because kachi phonetically equals victory. The deepest indigo dye, often applied through six or seven dye baths. The color refers to a kachi-dyed samurai jinbaori: a saturated, slightly cool very deep blue-black with the matte finish of multi-bath indigo silk.

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.

#2149ac
Original
#0057af
Protanopia
#004aaa
Deuteranopia
#006273
Tritanopia
#484848
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
8.04:1
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
2.61:1

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