#151B56

#151B56

Color Values

HEX

#151B56

RGB

21, 27, 86

HSL

234,5, 60,7%, 21,0%

HSV

234,5, 75,6%, 33,7%

CMYK

75,6%, 68,6%, 0,0%, 66,3%

OKLCH

0,2607 0,1055 272,2

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#151B56

#565015

Analogous

#153C56

#301556

#151B56

Triadic

#151B56

#56151B

#1B5615

Split Complementary

#151B56

#563015

#3C5615

Tetradic

#151B56

#56153C

#565015

#155630

Color Blindness Simulation

Original

#151B56

Protanopia

#181848

Deuteranopia

#171744

Tritanopia

#153C3A

Achromatopsia

#1E1E1E

CSS Usage

background-color: #151B56;
color: #151B56;
border-color: #151B56;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F3F4FB
100
#E4E6F6
200
#C6CAF1
300
#9DA3E7
400
#6772DA
500
#3240CD
600
#2833A4
700
#202983
800
#192066
900
#161B4B
950
#0E112F

Contrast Checker

Text on white

15,87:1

AA Pass AAA Pass

Text on black

1,32:1

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