#2131AB

#2131AB

Color Values

HEX

#2131AB

RGB

33, 49, 171

HSL

233.0, 67.6%, 40.0%

HSV

233.0, 80.7%, 67.1%

CMYK

80.7%, 71.3%, 0.0%, 32.9%

OKLCH

0.3952 0.1921 268.8

Properties

Cool Dark Nearest: NCS S 2050-R70B Violet

Color Harmonies

Complementary

#2131AB

#AB9B21

Analogous

#2176AB

#5621AB

#2131AB

Triadic

#2131AB

#AB2131

#31AB21

Split Complementary

#2131AB

#AB5621

#76AB21

Tetradic

#2131AB

#AB2176

#AB9B21

#21AB56

Color Blindness Simulation

Original

#2131AB

Protanopia

#28288E

Deuteranopia

#272686

Tritanopia

#227671

Achromatopsia

#363636

CSS Usage

background-color: #2131AB;
color: #2131AB;
border-color: #2131AB;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F3F4FC
100
#E3E5F7
200
#C3C9F3
300
#98A2EB
400
#6170E0
500
#293DD6
600
#2131AB
700
#1A2789
800
#151F6B
900
#131A4E
950
#0C1031

Contrast Checker

Text on white

10.04:1

AA Pass AAA Pass

Text on black

2.09:1

AA Fail AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026