#3971BC

#3971BC

Color Values

HEX

#3971BC

RGB

57, 113, 188

HSL

214.4, 53.5%, 48.0%

HSV

214.4, 69.7%, 73.7%

CMYK

69.7%, 39.9%, 0.0%, 26.3%

OKLCH

0.548 0.1315 256.5

Properties

Cool Dark Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#3971BC

#BC8439

Analogous

#39B2BC

#4339BC

#3971BC

Triadic

#3971BC

#BC3971

#71BC39

Split Complementary

#3971BC

#BC4339

#B2BC39

Tetradic

#3971BC

#BC39B2

#BC8439

#39BC43

Color Blindness Simulation

Original

#3971BC

Protanopia

#5152AA

Deuteranopia

#4E4AA6

Tritanopia

#3C9C98

Achromatopsia

#6B6B6B

CSS Usage

background-color: #3971BC;
color: #3971BC;
border-color: #3971BC;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FB
100
#E5ECF5
200
#C8D8EE
300
#A1BDE3
400
#6E99D3
500
#3B75C4
600
#2F5E9D
700
#264B7D
800
#1E3B62
900
#192D48
950
#101C2D

Contrast Checker

Text on white

4.93:1

AA Pass AAA Fail

Text on black

4.26:1

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