Quiet Arch Inside the Working

#15148a RGB(21,20,138)

About this color

Quiet Arch Inside the Working reads as dark and intense — a blue tone recorded at #15148a, RGB(21, 20, 138).

#15148aRGB(21, 20, 138)

HSL 241° · 75% saturation · 31% 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

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

In practical terms, a dark blue like this works well 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

In terms of colour combinations, 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
Quiet Arch Inside the Working
HEX
#15148a
RGB
rgb(21,20,138)
RGB%
rgb(8.2%,7.8%,54.1%)
HSL
hsl(241,75%,31%)
HSV
hsv(241,86%,54%)
CMYK
cmyk(85,86,0,46)
LAB
lab(18,43,-63)
LCH
lch(18,76,304)
sRGB
(0.082,0.078,0.541)
HEX8
#15148aff
CSS Name
Decimal
021020138

Similar colors

Color variants

Color info

Lightness
31%
Saturation
75%
Hue
241°
Chroma
76
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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