#155FC5

#155FC5

Color Values

HEX

#155FC5

RGB

21, 95, 197

HSL

214.8, 80.7%, 42.7%

HSV

214.8, 89.3%, 77.3%

CMYK

89.3%, 51.8%, 0.0%, 22.7%

OKLCH

0.504 0.174 258.4

Properties

Cool Dark Nearest: royalblue 3

Color Harmonies

Complementary

#155FC5

#C57B15

Analogous

#15B7C5

#2315C5

#155FC5

Triadic

#155FC5

#C5155F

#5FC515

Split Complementary

#155FC5

#C52315

#B7C515

Tetradic

#155FC5

#C515B7

#C57B15

#15C523

Color Blindness Simulation

Original

#155FC5

Protanopia

#3536AC

Deuteranopia

#312BA6

Tritanopia

#199995

Achromatopsia

#575757

CSS Usage

background-color: #155FC5;
color: #155FC5;
border-color: #155FC5;
Nearest Tailwind: Blue 500 #3B82F6

Tailwind Shades

50
#F2F7FD
100
#E1EBF9
200
#BED7F8
300
#90BAF3
400
#5594ED
500
#196FE6
600
#1459B8
700
#104793
800
#0C3873
900
#0D2B54
950
#081B35

Contrast Checker

Text on white

6.04:1

AA Pass AAA Fail

Text on black

3.48:1

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