Lightless Cave atop the Shadowing

#091521 RGB(9,21,33)

About this color

Lightless Cave atop the Shadowing settles into a deep blue territory with a vivid quality that feels cool — captured at #091521, RGB(9, 21, 33).

#091521RGB(9, 21, 33)

HSL 210° · 57% saturation · 8% lightness

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Psychology

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

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History

Blue has been among the most valued pigments throughout history — ultramarine, ground from lapis lazuli, was once worth more than gold and reserved for the robes of the Virgin Mary in medieval painting.

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Design use

From a design perspective, this shade excels as a grounding element in print design — covers, footers, section dividers. On screen it suits dashboards and interfaces where a serious tone matters.

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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
Lightless Cave atop the Shadowing
HEX
#091521
RGB
rgb(9,21,33)
RGB%
rgb(3.5%,8.2%,12.9%)
HSL
hsl(210,57%,8%)
HSV
hsv(210,73%,13%)
CMYK
cmyk(73,36,0,87)
LAB
lab(6,-1,-10)
LCH
lch(6,10,264)
sRGB
(0.035,0.082,0.129)
HEX8
#091521ff
CSS Name
Decimal
009021033

Similar colors

Color variants

Color info

Lightness
8%
Saturation
57%
Hue
210°
Chroma
10
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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