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Spartan Sashiko

#1b41ad
Notes

Spartan Sashiko (#1B41AD) is a true azure 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 (224°, 73%, 39%) 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
#1b41ad
RGB
rgb(27, 65, 173)
HSL
hsl(224, 73%, 39%)
HWB
hwb(224 11% 32%)
OKLCH
oklch(42.4% 0.178 264.7)
P3
color(display-p3 0.1446 0.2515 0.6534)
HSV
hsv(224, 84%, 68%)
LAB
lab(31.87% 28.76 -61.13)
LCH
lch(31.87% 67.56 295.20)
CMYK
cmyk(84%, 62%, 0%, 32%)

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.

Sashiko
noun

The Japanese decorative-and-reinforcement stitching technique — sashiko — traditionally white running-stitch on indigo-dyed cloth, used to mend and strengthen working garments since the Edo period. Sashiko color refers to a sashiko-stitched indigo boro mended cloth: a saturated, slightly cool deep blue with the matte finish of multi-bath aizome dye.

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.

#1b41ad
Original
#0052b1
Protanopia
#0044ab
Deuteranopia
#005d71
Tritanopia
#414141
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
8.73:1
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
2.41:1

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
##1B41AD
Display P3
Display P3
color(display-p3 0.1446 0.2515 0.6534)
P3 has subtle headroomOKLCH chroma 0.178

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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