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Charred Diǎnlán

#163784
Notes

Charred Diǎnlán (#163784) is a deep azure with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (222°, 71%, 30%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#163784
RGB
rgb(22, 55, 132)
HSL
hsl(222, 71%, 30%)
HWB
hwb(222 9% 48%)
OKLCH
oklch(36.4% 0.135 263.6)
HSV
hsv(222, 83%, 52%)
LAB
lab(25.47% 18.79 -46.57)
LCH
lch(25.47% 50.22 291.98)
CMYK
cmyk(83%, 58%, 0%, 48%)

Etymology

Charred
adjective

The past participle of char, to burn slightly — and a color word for surfaces that have been heat-blackened without fully consuming. Charred implies the carbon-blackened skin of grilled meat, fired wood, or smoke-darkened cathedral stone. Sits in the deep-and-near-black end of the engine's grid, slightly drier than inky and warmer than somber.

Diǎnlán
noun

Chinese diǎnlán (深蓝) — deep blue, used for the saturated blue of Ming-dynasty cobalt-on-porcelain underglaze and the deep-blue silks of Han-period imperial robes. The color refers to a Ming-dynasty diǎnlán cobalt-on-porcelain plate: a saturated, slightly cool deep blue with the high gloss of fired porcelain glaze.

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.

#163784
Original
#004287
Protanopia
#003883
Deuteranopia
#004a58
Tritanopia
#363636
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
10.97:1
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
1.91:1

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