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Cerulean

#51778E

A balanced, moderate cerulean — 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
51778E
RGB
81, 119, 142
HSL
203, 27%, 44%
HSB
203, 43%, 56%
CMYK
43, 16, 0, 44
LAB
48, -9, -17
LCH
48, 19, 242
OKLCH
0.55, 0.06, 236
XYZ
15, 17, 28
LUV
48, -18, -23
HWB
203, 32%, 44%
Pantone
Cool Gray 8 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.