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Steel Blue

#21A1D7

A balanced, moderate steel 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
21A1D7
RGB
33, 161, 215
HSL
198, 73%, 49%
HSB
198, 85%, 84%
CMYK
85, 25, 0, 16
LAB
62, -20, -38
LCH
62, 42, 242
OKLCH
0.67, 0.13, 233
XYZ
26, 31, 69
LUV
62, -40, -56
HWB
198, 13%, 16%
Pantone
311 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.