#3971AA

#3971AA

Color Values

HEX

#3971AA

RGB

57, 113, 170

HSL

210.3, 49.8%, 44.5%

HSV

210.3, 66.5%, 66.7%

CMYK

66.5%, 33.5%, 0.0%, 33.3%

OKLCH

0.5374 0.1077 250.9

Properties

Cool Dark Nearest: RAL 5015 Sky Blue

Color Harmonies

Complementary

#3971AA

#AA7239

Analogous

#39A9AA

#3A39AA

#3971AA

Triadic

#3971AA

#AA3971

#71AA39

Split Complementary

#3971AA

#AA3A39

#A9AA39

Tetradic

#3971AA

#AA39A9

#AA7239

#39AA3A

Color Blindness Simulation

Original

#3971AA

Protanopia

#51529C

Deuteranopia

#4E4A99

Tritanopia

#3C918F

Achromatopsia

#696969

CSS Usage

background-color: #3971AA;
color: #3971AA;
border-color: #3971AA;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F4F7FB
100
#E6EDF5
200
#CADBED
300
#A3C1E0
400
#72A0D0
500
#407FBF
600
#336599
700
#29517A
800
#203F5F
900
#1B3046
950
#111E2C

Contrast Checker

Text on white

5.1:1

AA Pass AAA Fail

Text on black

4.12:1

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