#5166D4

#5166D4

Color Values

HEX

#5166D4

RGB

81, 102, 212

HSL

230.4, 60.4%, 57.5%

HSV

230.4, 61.8%, 83.1%

CMYK

61.8%, 51.9%, 0.0%, 16.9%

OKLCH

0.5528 0.1698 271.6

Properties

Cool Dark Nearest: royalblue 3

Color Harmonies

Complementary

#5166D4

#D4BF51

Analogous

#51A8D4

#7E51D4

#5166D4

Triadic

#5166D4

#D45166

#66D451

Split Complementary

#5166D4

#D47E51

#A8D451

Tetradic

#5166D4

#D451A8

#D4BF51

#51D47E

Color Blindness Simulation

Original

#5166D4

Protanopia

#5A5AB9

Deuteranopia

#5957B3

Tritanopia

#52A4A0

Achromatopsia

#696969

CSS Usage

background-color: #5166D4;
color: #5166D4;
border-color: #5166D4;
Nearest Tailwind: Blue 500 #3B82F6

Tailwind Shades

50
#F3F5FB
100
#E4E7F6
200
#C6CDF1
300
#9DA9E7
400
#687ADA
500
#324BCD
600
#283CA4
700
#203083
800
#192666
900
#161F4B
950
#0E132F

Contrast Checker

Text on white

5.0:1

AA Pass AAA Fail

Text on black

4.2:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026