The Starless Cave circa Bleeding

#281d5b RGB(40,29,91)

About this color

The Starless Cave circa Bleeding reads as dark and vivid — a blue tone recorded at #281d5b, RGB(40, 29, 91).

#281d5bRGB(40, 29, 91)

HSL 251° · 52% saturation · 24% lightness

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Psychology

Dark blues project authority, depth and reliability — the colour of deep water, the night sky, and tailored suits.

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History

In Japanese aesthetics, blue — particularly indigo — has been a central colour for centuries: the slow-dyed textiles of Tokushima remain prized for their depth and permanence.

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Design use

In practical terms, a dark blue like this works well as a primary background in dark themes, a strong border or divider, or a headline colour against a light surface. Combine with lighter tints of the same hue for a cohesive palette.

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Colour pairings

In terms of colour combinations, complement this blue with amber and warm orange for high-contrast energy, or stay within blue-green and violet neighbours for a serene, cohesive feel.

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Color Categories

Color formats

Name
The Starless Cave circa Bleeding
HEX
#281d5b
RGB
rgb(40,29,91)
RGB%
rgb(15.7%,11.4%,35.7%)
HSL
hsl(251,52%,24%)
HSV
hsv(251,68%,36%)
CMYK
cmyk(56,68,0,64)
LAB
lab(16,24,-36)
LCH
lch(16,43,304)
sRGB
(0.157,0.114,0.357)
HEX8
#281d5bff
CSS Name
Decimal
040029091

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Color variants

Color info

Lightness
24%
Saturation
52%
Hue
251°
Chroma
43
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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