The Cavern before Brooding Gloaming

#00366d RGB(0,54,109)

About this color

The Cavern before Brooding Gloaming is a dark blue with a intense character, positioned at #00366d on the color spectrum.

#00366dRGB(0, 54, 109)

HSL 210° · 100% saturation · 21% lightness

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Psychology

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

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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

From a design perspective, this shade excels 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

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
The Cavern before Brooding Gloaming
HEX
#00366d
RGB
rgb(0,54,109)
RGB%
rgb(0%,21.2%,42.7%)
HSL
hsl(210,100%,21%)
HSV
hsv(210,100%,43%)
CMYK
cmyk(100,50,0,57)
LAB
lab(23,8,-36)
LCH
lch(23,37,283)
sRGB
(0,0.212,0.427)
HEX8
#00366dff
CSS Name
Decimal
000054109

Similar colors

Color variants

Color info

Lightness
21%
Saturation
100%
Hue
210°
Chroma
37
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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