#311B58

#311B58

Color Values

HEX

#311B58

RGB

49, 27, 88

HSL

261.6, 53.0%, 22.5%

HSV

261.6, 69.3%, 34.5%

CMYK

44.3%, 69.3%, 0.0%, 65.5%

OKLCH

0.289 0.1047 295.7

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#311B58

#42581B

Analogous

#1B2358

#4F1B58

#311B58

Triadic

#311B58

#58311B

#1B5831

Split Complementary

#311B58

#584F1B

#23581B

Tetradic

#311B58

#581B23

#42581B

#1B584F

Color Blindness Simulation

Original

#311B58

Protanopia

#272749

Deuteranopia

#292A46

Tritanopia

#303E3B

Achromatopsia

#242424

CSS Usage

background-color: #311B58;
color: #311B58;
border-color: #311B58;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F6F4FB
100
#EBE5F5
200
#D6C8EE
300
#B9A1E2
400
#936FD3
500
#6D3CC3
600
#57309C
700
#45267D
800
#361E62
900
#2A1948
950
#1B102D

Contrast Checker

Text on white

14.7:1

AA Pass AAA Pass

Text on black

1.43:1

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