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Deathly Hokkaido

#1b1959
Notes

Deathly Hokkaido (#1B1959) is a deep blue with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (242°, 56%, 22%) 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
#1b1959
RGB
rgb(27, 25, 89)
HSL
hsl(242, 56%, 22%)
HWB
hwb(242 10% 65%)
OKLCH
oklch(26.4% 0.111 277.0)
P3
color(display-p3 0.1045 0.0983 0.3351)
HSV
hsv(242, 72%, 35%)
LAB
lab(13.53% 23.42 -38.20)
LCH
lch(13.53% 44.81 301.52)
CMYK
cmyk(70%, 72%, 0%, 65%)

Etymology

Deathly
adjective

Old English dēath, death — adjectival suffix -ly. As a color modifier, deathly implies a deep-cool-and-pallid quality, the cold-shifted darkness associated with mortality and absence of vital warmth. Sits at the deep-and-cool end of the grid, parallel to funereal but with pallor undertone.

Hokkaido
noun

Japan's northernmost island, home to the Furano lavender fields cultivated since 1948 by Tomita Farm — a Japanese imitation of Provençal lavender agriculture, now a national tourist landmark. Hokkaido color refers to a Furano lavender field at peak bloom: a saturated, slightly cool deep blue-violet with the matte finish of Lavandula angustifolia essential-oil-rich bracts. Slightly cooler than Provençal lavanda.

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.

#1b1959
Original
#00255b
Protanopia
#002058
Deuteranopia
#002a36
Tritanopia
#1e1e1e
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
15.79:1
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
1.33:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##1B1959
Display P3
Display P3
color(display-p3 0.1045 0.0983 0.3351)
P3 has subtle headroomOKLCH chroma 0.111

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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