The Brook underneath Plain Opening

#15659d RGB(21,101,157)

About this color

The Brook underneath Plain Opening reads as medium-dark and intense — a blue tone recorded at #15659d, RGB(21, 101, 157).

#15659dRGB(21, 101, 157)

HSL 205° · 76% saturation · 35% 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

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

In practical terms, a medium-dark blue like this works well 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

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
The Brook underneath Plain Opening
HEX
#15659d
RGB
rgb(21,101,157)
RGB%
rgb(8.2%,39.6%,61.6%)
HSL
hsl(205,76%,35%)
HSV
hsv(205,87%,62%)
CMYK
cmyk(87,36,0,38)
LAB
lab(41,-2,-37)
LCH
lch(41,37,267)
sRGB
(0.082,0.396,0.616)
HEX8
#15659dff
CSS Name
Decimal
021101157

Similar colors

Color variants

Color info

Lightness
35%
Saturation
76%
Hue
205°
Chroma
37
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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