Old-fashioned Brook behind Working

#3733bc RGB(55,51,188)

About this color

Old-fashioned Brook behind Working is a vivid, medium-dark blue tone, fixed at #3733bc in the RGB color space.

#3733bcRGB(55, 51, 188)

HSL 242° · 57% saturation · 47% lightness

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Psychology

Mid blue dominates corporate and tech branding precisely because it reads as dependable without being cold.

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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

Practically, this medium-dark blue is comfortable as accent colours, call-to-action buttons, and icon fills — it holds its own without overwhelming adjacent elements. Always check WCAG contrast ratios before using it under or over text.

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Colour pairings

For palette building, 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
Old-fashioned Brook behind Working
HEX
#3733bc
RGB
rgb(55,51,188)
RGB%
rgb(21.6%,20%,73.7%)
HSL
hsl(242,57%,47%)
HSV
hsv(242,73%,74%)
CMYK
cmyk(71,73,0,26)
LAB
lab(31,45,-71)
LCH
lch(31,84,302)
sRGB
(0.216,0.2,0.737)
HEX8
#3733bcff
CSS Name
Decimal
055051188

Similar colors

Color variants

Color info

Lightness
47%
Saturation
57%
Hue
242°
Chroma
84
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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