The Permanent Atoll with Curing

#374b8b RGB(55,75,139)

About this color

The Permanent Atoll with Curing is a medium-dark blue with a moderate character, positioned at #374b8b on the color spectrum.

#374b8bRGB(55, 75, 139)

HSL 226° · 43% 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

The ancient Egyptians were among the first to produce blue pigment artificially — Egyptian blue, made from copper and sand, coloured the walls of pharaonic tombs.

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Design use

From a design perspective, this shade excels as a background for light-coloured text, as a deep accent stripe, or as an anchoring tone in dark-mode interfaces. It pairs naturally with off-whites, warm creams, and metallic highlights.

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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 Permanent Atoll with Curing
HEX
#374b8b
RGB
rgb(55,75,139)
RGB%
rgb(21.6%,29.4%,54.5%)
HSL
hsl(226,43%,38%)
HSV
hsv(226,60%,55%)
CMYK
cmyk(60,46,0,45)
LAB
lab(33,13,-38)
LCH
lch(33,40,289)
sRGB
(0.216,0.294,0.545)
HEX8
#374b8bff
CSS Name
Decimal
055075139

Similar colors

Color variants

Color info

Lightness
38%
Saturation
43%
Hue
226°
Chroma
40
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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