The Starless Cave beneath Corroding

#00178b RGB(0,23,139)

About this color

The Starless Cave beneath Corroding occupies the dark, intense end of the blue spectrum, defined by its coordinates #00178b — RGB(0, 23, 139).

#00178bRGB(0, 23, 139)

HSL 230° · 100% saturation · 27% 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

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

Practically speaking, this deep blue is most at home 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

When it comes to colour harmony, 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 beneath Corroding
HEX
#00178b
RGB
rgb(0,23,139)
RGB%
rgb(0%,9%,54.5%)
HSL
hsl(230,100%,27%)
HSV
hsv(230,100%,55%)
CMYK
cmyk(100,83,0,45)
LAB
lab(18,41,-64)
LCH
lch(18,76,303)
sRGB
(0,0.09,0.545)
HEX8
#00178bff
CSS Name
Decimal
000023139

Similar colors

Color variants

Color info

Lightness
27%
Saturation
100%
Hue
230°
Chroma
76
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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