The Rusted Boulder with Dwindling

#180b5b RGB(24,11,91)

About this color

The Rusted Boulder with Dwindling is a dark blue with a intense character, positioned at #180b5b on the color spectrum.

#180b5bRGB(24, 11, 91)

HSL 250° · 78% saturation · 20% 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 Rusted Boulder with Dwindling
HEX
#180b5b
RGB
rgb(24,11,91)
RGB%
rgb(9.4%,4.3%,35.7%)
HSL
hsl(250,78%,20%)
HSV
hsv(250,88%,36%)
CMYK
cmyk(74,88,0,64)
LAB
lab(10,32,-45)
LCH
lch(10,55,305)
sRGB
(0.094,0.043,0.357)
HEX8
#180b5bff
CSS Name
Decimal
024011091

Similar colors

Color variants

Color info

Lightness
20%
Saturation
78%
Hue
250°
Chroma
55
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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