Faltering Boulder behind the Smoldering

#171921 RGB(23,25,33)

About this color

Faltering Boulder behind the Smoldering settles into a deep blue territory with a muted quality that feels cool — captured at #171921, RGB(23, 25, 33).

#171921RGB(23, 25, 33)

HSL 228° · 18% saturation · 11% 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
Faltering Boulder behind the Smoldering
HEX
#171921
RGB
rgb(23,25,33)
RGB%
rgb(9%,9.8%,12.9%)
HSL
hsl(228,18%,11%)
HSV
hsv(228,30%,13%)
CMYK
cmyk(30,24,0,87)
LAB
lab(9,1,-6)
LCH
lch(9,6,279)
sRGB
(0.09,0.098,0.129)
HEX8
#171921ff
CSS Name
Decimal
023025033

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Color variants

Color info

Lightness
11%
Saturation
18%
Hue
228°
Chroma
6
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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