Substantial Border via Filling

#365ea6 RGB(54,94,166)

About this color

Substantial Border via Filling is a medium-dark blue with a vivid character, positioned at #365ea6 on the color spectrum.

#365ea6RGB(54, 94, 166)

HSL 219° · 51% saturation · 43% 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

In Japanese aesthetics, blue — particularly indigo — has been a central colour for centuries: the slow-dyed textiles of Tokushima remain prized for their depth and permanence.

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Design use

In design terms, a mid-toned blue like this handles brand accents, data visualisation series, and illustrative elements. Its middle lightness gives it presence on both white and dark backgrounds.

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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
Substantial Border via Filling
HEX
#365ea6
RGB
rgb(54,94,166)
RGB%
rgb(21.2%,36.9%,65.1%)
HSL
hsl(219,51%,43%)
HSV
hsv(219,67%,65%)
CMYK
cmyk(67,43,0,35)
LAB
lab(40,10,-43)
LCH
lch(40,44,283)
sRGB
(0.212,0.369,0.651)
HEX8
#365ea6ff
CSS Name
Decimal
054094166

Similar colors

Color variants

Color info

Lightness
43%
Saturation
51%
Hue
219°
Chroma
44
Temperature
WarmCool
Contrast Preview
The quick brown fox jumps over the lazy dog

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