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Bleak Mantle

#1a134c
Notes

Bleak Mantle (#1A134C) is a deep blue 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 (247°, 60%, 19%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1a134c
RGB
rgb(26, 19, 76)
HSL
hsl(247, 60%, 19%)
HWB
hwb(247 7% 70%)
OKLCH
oklch(23.9% 0.100 281.2)
HSV
hsv(247, 75%, 30%)
LAB
lab(10.61% 22.49 -34.11)
LCH
lch(10.61% 40.86 303.39)
CMYK
cmyk(66%, 75%, 0%, 70%)

Etymology

Bleak
adjective

Old Norse bleikr, pale — sharing root with English bleach. As a color modifier, bleak implies a deep-and-cold-and-comfortless quality, the dark gray-pale of Yorkshire-Moors and Hebrides late-winter atmospheric-light. Sits at the deep-and-cool end of the grid, parallel to grim and bitter in atmospheric register.

Mantle
noun

Old English mentel via Latin mantellum, cloak — the term used in medieval European heraldry and ecclesiastical regalia for the long ceremonial cloak. Mantle color refers to a Coronation-period English king's deep-violet velvet mantle: a saturated, slightly cool deep blue-violet with the velvet finish of crushed-pile silk velvet over ermine. Distinct from the priestly cope and the academic gown in cut and ceremonial use.

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.

#1a134c
Original
#001f4e
Protanopia
#001b4b
Deuteranopia
#00222d
Tritanopia
#191919
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
16.92:1
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
1.24:1

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