#313B8F

#313B8F

Color Values

HEX

#313B8F

RGB

49, 59, 143

HSL

233.6, 49.0%, 37.6%

HSV

233.6, 65.7%, 56.1%

CMYK

65.7%, 58.7%, 0.0%, 43.9%

OKLCH

0.3957 0.138 273.2

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#313B8F

#8F8531

Analogous

#316A8F

#56318F

#313B8F

Triadic

#313B8F

#8F313B

#3B8F31

Split Complementary

#313B8F

#8F5631

#6A8F31

Tetradic

#313B8F

#8F316A

#8F8531

#318F56

Color Blindness Simulation

Original

#313B8F

Protanopia

#35357B

Deuteranopia

#353476

Tritanopia

#326B67

Achromatopsia

#3F3F3F

CSS Usage

background-color: #313B8F;
color: #313B8F;
border-color: #313B8F;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FB
100
#E6E7F5
200
#CACEED
300
#A4AAE0
400
#727CCF
500
#414EBE
600
#343F98
700
#2A327A
800
#21275F
900
#1B2046
950
#11142C

Contrast Checker

Text on white

9.75:1

AA Pass AAA Pass

Text on black

2.15:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026