#313F9B

#313F9B

Color Values

HEX

#313F9B

RGB

49, 63, 155

HSL

232.1, 52.0%, 40.0%

HSV

232.1, 68.4%, 60.8%

CMYK

68.4%, 59.4%, 0.0%, 39.2%

OKLCH

0.4136 0.1498 271.6

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#313F9B

#9B8D31

Analogous

#31749B

#58319B

#313F9B

Triadic

#313F9B

#9B313F

#3F9B31

Split Complementary

#313F9B

#9B5831

#749B31

Tetradic

#313F9B

#9B3174

#9B8D31

#319B58

Color Blindness Simulation

Original

#313F9B

Protanopia

#373785

Deuteranopia

#36357F

Tritanopia

#32736F

Achromatopsia

#434343

CSS Usage

background-color: #313F9B;
color: #313F9B;
border-color: #313F9B;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FB
100
#E5E7F5
200
#C9CEEE
300
#A2AAE2
400
#707DD2
500
#3D4FC2
600
#313F9B
700
#27327C
800
#1F2761
900
#1A2047
950
#10142D

Contrast Checker

Text on white

9.07:1

AA Pass AAA Pass

Text on black

2.31:1

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