#397DB7

#397DB7

Color Values

HEX

#397DB7

RGB

57, 125, 183

HSL

207.6, 52.5%, 47.1%

HSV

207.6, 68.9%, 71.8%

CMYK

68.9%, 31.7%, 0.0%, 28.2%

OKLCH

0.5727 0.1131 247.2

Properties

Cool Light Nearest: RAL 5012 Light Blue

Color Harmonies

Complementary

#397DB7

#B77339

Analogous

#39B7B2

#393EB7

#397DB7

Triadic

#397DB7

#B7397D

#7DB739

Split Complementary

#397DB7

#B7393E

#B7B239

Tetradic

#397DB7

#B239B7

#B77339

#3EB739

Color Blindness Simulation

Original

#397DB7

Protanopia

#5657A9

Deuteranopia

#524DA6

Tritanopia

#3C9E9B

Achromatopsia

#737373

CSS Usage

background-color: #397DB7;
color: #397DB7;
border-color: #397DB7;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F8FB
100
#E5EEF5
200
#C9DDEE
300
#A2C4E2
400
#6FA5D2
500
#3D85C2
600
#306A9C
700
#27557C
800
#1E4261
900
#1A3247
950
#10202D

Contrast Checker

Text on white

4.38:1

AA Fail AAA Fail

Text on black

4.79:1

AA Pass 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