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Pure Kabud

#398ade
Notes

Pure Kabud (#398ADE) 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°, 71%, 55%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#398ade
RGB
rgb(57, 138, 222)
HSL
hsl(211, 71%, 55%)
HWB
hwb(211 22% 13%)
OKLCH
oklch(62.4% 0.149 252.1)
HSV
hsv(211, 74%, 87%)
LAB
lab(56.40% 3.75 -49.83)
LCH
lch(56.40% 49.97 274.30)
CMYK
cmyk(74%, 38%, 0%, 13%)

Etymology

Pure
adjective

Latin purus, clean, unmixed — applied to color since antiquity for hues that contain only one pigment without dilution by white, black, or another color. Pure red is the textbook ideal: high saturation, mid lightness, no shift. Sits at the bold-bucket center, parallel to true and strong.

Kabud
noun

The Arabic word for blue — used in classical Arabic poetry for the blue of the sea, the sky, and Persian-tile mosques. Kabud spans the deep azure-blue range distinct from azraq (sky-blue) and neel (indigo). The color refers to the kabud-glazed dome of the Imam Mosque at Isfahan: a saturated, slightly cool deep blue with the high gloss of fired faience.

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.

#398ade
Original
#6390e1
Protanopia
#4980dc
Deuteranopia
#009ea9
Tritanopia
#7f7f7f
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
3.58:1
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
5.86:1

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