The Cavern under Penumbral Stifling

#151772 RGB(21,23,114)

About this color

The Cavern under Penumbral Stifling reads as dark and vivid — a blue tone recorded at #151772, RGB(21, 23, 114).

#151772RGB(21, 23, 114)

HSL 239° · 69% saturation · 26% 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 Cavern under Penumbral Stifling
HEX
#151772
RGB
rgb(21,23,114)
RGB%
rgb(8.2%,9%,44.7%)
HSL
hsl(239,69%,26%)
HSV
hsv(239,82%,45%)
CMYK
cmyk(82,80,0,55)
LAB
lab(15,33,-52)
LCH
lch(15,62,302)
sRGB
(0.082,0.09,0.447)
HEX8
#151772ff
CSS Name
Decimal
021023114

Similar colors

Color variants

Color info

Lightness
26%
Saturation
69%
Hue
239°
Chroma
62
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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