#151B80

#151B80

Color Values

HEX

#151B80

RGB

21, 27, 128

HSL

236.6, 71.8%, 29.2%

HSV

236.6, 83.6%, 50.2%

CMYK

83.6%, 78.9%, 0.0%, 49.8%

OKLCH

0.3077 0.1635 269.5

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#151B80

#807A15

Analogous

#155180

#441580

#151B80

Triadic

#151B80

#80151B

#1B8015

Split Complementary

#151B80

#804415

#518015

Tetradic

#151B80

#801551

#807A15

#158044

Color Blindness Simulation

Original

#151B80

Protanopia

#181868

Deuteranopia

#171762

Tritanopia

#155450

Achromatopsia

#212121

CSS Usage

background-color: #151B80;
color: #151B80;
border-color: #151B80;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F3F3FC
100
#E2E3F8
200
#C2C5F5
300
#969BEE
400
#5D65E4
500
#242EDB
600
#1D25AF
700
#171E8C
800
#12176E
900
#111550
950
#0B0D32

Contrast Checker

Text on white

14.0:1

AA Pass AAA Pass

Text on black

1.5:1

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