#5151BF

#5151BF

Color Values

HEX

#5151BF

RGB

81, 81, 191

HSL

240.0, 46.2%, 53.3%

HSV

240.0, 57.6%, 74.9%

CMYK

57.6%, 57.6%, 0.0%, 25.1%

OKLCH

0.4978 0.1682 278.4

Properties

Cool Dark Nearest: slateblue 3

Color Harmonies

Complementary

#5151BF

#BFBF51

Analogous

#5188BF

#8851BF

#5151BF

Triadic

#5151BF

#BF5151

#51BF51

Split Complementary

#5151BF

#BF8851

#88BF51

Tetradic

#5151BF

#BF5188

#BFBF51

#51BF88

Color Blindness Simulation

Original

#5151BF

Protanopia

#5151A4

Deuteranopia

#51519E

Tritanopia

#518F8B

Achromatopsia

#595959

CSS Usage

background-color: #5151BF;
color: #5151BF;
border-color: #5151BF;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F4F4FA
100
#E6E6F4
200
#CBCBEC
300
#A6A6DE
400
#7575CC
500
#4545BA
600
#373795
700
#2C2C77
800
#22225D
900
#1C1C45
950
#12122B

Contrast Checker

Text on white

6.4:1

AA Pass AAA Fail

Text on black

3.28:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026