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Prussian Blue

#00366A

A deep, moderate prussian blue — sophisticated balance of hue and saturation that conveys composure and subtle refinement, well-suited to modern, minimalist design.

Psychology

Blue is the world's most-preferred color across age, gender, and culture. It lowers heart rate, conveys stability and trust, and reads as professional almost regardless of context.

Meaning

Trust, authority, and depth — which is why it anchors finance, healthcare, government, and big-tech logos. Lighter blues feel airy and aspirational; navy and midnight feel established.

Applications

Foundational for SaaS, fintech, and enterprise interfaces. Mix with warm accents to avoid the corporate-blue trap of looking like every competitor.

Conversion

HEX
00366A
RGB
0, 54, 106
HSL
209, 100%, 21%
HSB
209, 100%, 42%
CMYK
100, 49, 0, 58
LAB
22, 1, -36
LCH
22, 36, 272
OKLCH
0.33, 0.10, 253
XYZ
4, 4, 14
LUV
22, -12, -41
HWB
209, 0%, 58%
Pantone
541 C

Harmonies

Analogous
Complementary
Split Complementary
Triadic
Tetradic
Square

Shades & tints

Similar named colors

Browse every named blue on shades of blue, or all families on colors.