#155AAC

#155AAC

Color Values

HEX

#155AAC

RGB

21, 90, 172

HSL

212.6, 78.2%, 37.8%

HSV

212.6, 87.8%, 67.5%

CMYK

87.8%, 47.7%, 0.0%, 32.5%

OKLCH

0.4741 0.1469 256.1

Properties

Cool Dark Nearest: NCS S 2065-B Pure Blue

Color Harmonies

Complementary

#155AAC

#AC6715

Analogous

#15A5AC

#1C15AC

#155AAC

Triadic

#155AAC

#AC155A

#5AAC15

Split Complementary

#155AAC

#AC1C15

#A5AC15

Tetradic

#155AAC

#AC15A5

#AC6715

#15AC1C

Color Blindness Simulation

Original

#155AAC

Protanopia

#333398

Deuteranopia

#2F2A93

Tritanopia

#188885

Achromatopsia

#515151

CSS Usage

background-color: #155AAC;
color: #155AAC;
border-color: #155AAC;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F2F7FC
100
#E1ECF9
200
#BFD9F7
300
#92BEF2
400
#579AEA
500
#1C77E3
600
#165FB6
700
#124C91
800
#0E3B72
900
#0E2D53
950
#091D34

Contrast Checker

Text on white

6.8:1

AA Pass AAA Fail

Text on black

3.09:1

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