The Reasonable Border between the Cooling

#1c90d5 RGB(28,144,213)

About this color

The Reasonable Border between the Cooling settles into a medium-dark blue territory with a intense quality that feels cool — captured at #1c90d5, RGB(28, 144, 213).

#1c90d5RGB(28, 144, 213)

HSL 202° · 77% 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

Blue has been among the most valued pigments throughout history — ultramarine, ground from lapis lazuli, was once worth more than gold and reserved for the robes of the Virgin Mary in medieval painting.

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Design use

In design terms, a mid-toned blue like this handles interactive elements, tags, badges, and highlight states. It has enough saturation to register clearly without straining extended-reading contexts.

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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 Reasonable Border between the Cooling
HEX
#1c90d5
RGB
rgb(28,144,213)
RGB%
rgb(11%,56.5%,83.5%)
HSL
hsl(202,77%,47%)
HSV
hsv(202,87%,84%)
CMYK
cmyk(87,32,0,16)
LAB
lab(57,-6,-44)
LCH
lch(57,44,262)
sRGB
(0.11,0.565,0.835)
HEX8
#1c90d5ff
CSS Name
Decimal
028144213

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Color variants

Color info

Lightness
47%
Saturation
77%
Hue
202°
Chroma
44
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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