Umbral Cave from Dwindling

#151f3c RGB(21,31,60)

About this color

Umbral Cave from Dwindling is a dark blue with a moderate character, positioned at #151f3c on the color spectrum.

#151f3cRGB(21, 31, 60)

HSL 225° · 48% saturation · 16% lightness

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Psychology

In its darkest registers blue becomes serious and introspective: trustworthy, professional, slightly austere.

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History

The ancient Egyptians were among the first to produce blue pigment artificially — Egyptian blue, made from copper and sand, coloured the walls of pharaonic tombs.

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Design use

From a design perspective, this shade excels as a background for light-coloured text, as a deep accent stripe, or as an anchoring tone in dark-mode interfaces. It pairs naturally with off-whites, warm creams, and metallic highlights.

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Colour pairings

Looking at colour relationships, this blue pairs naturally with warm neutrals — tawny beiges, soft terracottas, aged brass — which amplify its cool character by contrast. Analogous blue-violets and blue-greens give a more cohesive, tonal result.

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Color Categories

Color formats

Name
Umbral Cave from Dwindling
HEX
#151f3c
RGB
rgb(21,31,60)
RGB%
rgb(8.2%,12.2%,23.5%)
HSL
hsl(225,48%,16%)
HSV
hsv(225,65%,24%)
CMYK
cmyk(65,48,0,76)
LAB
lab(12,6,-20)
LCH
lch(12,21,287)
sRGB
(0.082,0.122,0.235)
HEX8
#151f3cff
CSS Name
Decimal
021031060

Similar colors

Color variants

Color info

Lightness
16%
Saturation
48%
Hue
225°
Chroma
21
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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