Plain Atoll over Toiling

#1551ac RGB(21,81,172)

About this color

Plain Atoll over Toiling settles into a medium-dark blue territory with a intense quality that feels cool — captured at #1551ac, RGB(21, 81, 172).

#1551acRGB(21, 81, 172)

HSL 216° · 78% saturation · 38% 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
Plain Atoll over Toiling
HEX
#1551ac
RGB
rgb(21,81,172)
RGB%
rgb(8.2%,31.8%,67.5%)
HSL
hsl(216,78%,38%)
HSV
hsv(216,88%,67%)
CMYK
cmyk(88,53,0,33)
LAB
lab(36,17,-54)
LCH
lch(36,57,287)
sRGB
(0.082,0.318,0.675)
HEX8
#1551acff
CSS Name
Decimal
021081172

Similar colors

Color variants

Color info

Lightness
38%
Saturation
78%
Hue
216°
Chroma
57
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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