Copper Acre by Stirring

#1d63a6 RGB(29,99,166)

About this color

Copper Acre by Stirring settles into a medium-dark blue territory with a vivid quality that feels cool — captured at #1d63a6, RGB(29, 99, 166).

#1d63a6RGB(29, 99, 166)

HSL 209° · 70% 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
Copper Acre by Stirring
HEX
#1d63a6
RGB
rgb(29,99,166)
RGB%
rgb(11.4%,38.8%,65.1%)
HSL
hsl(209,70%,38%)
HSV
hsv(209,83%,65%)
CMYK
cmyk(83,40,0,35)
LAB
lab(41,4,-42)
LCH
lch(41,42,275)
sRGB
(0.114,0.388,0.651)
HEX8
#1d63a6ff
CSS Name
Decimal
029099166

Similar colors

Color variants

Color info

Lightness
38%
Saturation
70%
Hue
209°
Chroma
42
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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