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Sizzling Konjō

#399ae1
Notes

Sizzling Konjō (#399AE1) 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 (205°, 74%, 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
#399ae1
RGB
rgb(57, 154, 225)
HSL
hsl(205, 74%, 55%)
HWB
hwb(205 22% 12%)
OKLCH
oklch(66.2% 0.138 244.5)
HSV
hsv(205, 75%, 88%)
LAB
lab(61.15% -4.54 -44.00)
LCH
lch(61.15% 44.23 264.11)
CMYK
cmyk(75%, 32%, 0%, 12%)

Etymology

Sizzling
adjective

Imitative-onomatopoeic origin — present-participle of sizzle, with sound-and-action mimicry. As a color modifier, sizzling implies a saturated-and-hot-and-active quality, the bright color of Spanish-tapas-tapa hot-griddle iron-skillet surface-emission. Sits at the bright-and-warm end of the grid, parallel to searing and scorching in usage.

Konjō
noun

Japanese konjō (紺青) — deep blue-azure, the saturated deep navy used in Edo-period samurai inner robes and Buddhist mandala backgrounds. Distinct from konpeki by its slightly cooler shift toward navy. The color refers to a konjō-dyed silk: a saturated, slightly cool dark blue with the satin finish of multi-bath dyed 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.

#399ae1
Original
#799ce4
Protanopia
#628de0
Deuteranopia
#00abb3
Tritanopia
#8b8b8b
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
3.05:1
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
6.88:1

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