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Triumphant Kachi

#273f97
Notes

Triumphant Kachi (#273F97) is a true blue with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (227°, 59%, 37%) 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
#273f97
RGB
rgb(39, 63, 151)
HSL
hsl(227, 59%, 37%)
HWB
hwb(227 15% 41%)
OKLCH
oklch(40.5% 0.147 267.7)
P3
color(display-p3 0.1738 0.2446 0.5710)
HSV
hsv(227, 74%, 59%)
LAB
lab(29.96% 22.81 -50.96)
LCH
lch(29.96% 55.83 294.12)
CMYK
cmyk(74%, 58%, 0%, 41%)

Etymology

Triumphant
adjective

Latin triumphāns, celebrating victory — present-participle of triumphāre. As a color modifier, triumphant implies a saturated-and-celebratory-and-victorious quality, the deep-rich color of Roman-Imperial-period triumphal-arch spolia relief and Arch-of-Titus victory imagery. Sits at the bold-and-celebratory end of the grid, parallel to victorious and conquering.

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

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.

#273f97
Original
#004c9a
Protanopia
#004295
Deuteranopia
#005564
Tritanopia
#404040
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
9.36:1
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
2.24:1

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
##273F97
Display P3
Display P3
color(display-p3 0.1738 0.2446 0.5710)
P3 has subtle headroomOKLCH chroma 0.147

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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