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Commanding Kihachijō

#1f82e9
Notes

Commanding Kihachijō (#1F82E9) 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 (211°, 82%, 52%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1f82e9
RGB
rgb(31, 130, 233)
HSL
hsl(211, 82%, 52%)
HWB
hwb(211 12% 9%)
OKLCH
oklch(60.7% 0.178 254.0)
HSV
hsv(211, 87%, 91%)
LAB
lab(54.17% 10.24 -59.58)
LCH
lch(54.17% 60.45 279.75)
CMYK
cmyk(87%, 44%, 0%, 9%)

Etymology

Commanding
adjective

Latin commendāre, to entrust / order — present-participle of command. As a color modifier, commanding implies a saturated-and-authoritative quality where the hue claims visual leadership of its surrounding palette. Sits at the bold-and-authoritative end of the grid, parallel to authoritative and imperial in usage.

Kihachijō
noun

The traditional indigo-dyed silk of Hachijō island in Tokyo's southern archipelago — produced from native kobaicha (yellow-brown) and aogarami (deep blue) dyes since at least the eighteenth century. Kihachijō-iro refers to the saturated medium blue of the silk: a saturated, slightly cool deep blue with the satin finish of plant-dyed island 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.

#1f82e9
Original
#4b8bed
Protanopia
#1c79e7
Deuteranopia
#009baa
Tritanopia
#747474
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).
AA Largeon White
3.87:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
5.43:1

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