#155A90

#155A90

Color Values

HEX

#155A90

RGB

21, 90, 144

HSL

206.3, 74.5%, 32.4%

HSV

206.3, 85.4%, 56.5%

CMYK

85.4%, 37.5%, 0.0%, 43.5%

OKLCH

0.455 0.1097 247.6

Properties

Cool Dark Nearest: RAL 5019 Capri Blue

Color Harmonies

Complementary

#155A90

#904B15

Analogous

#159089

#151D90

#155A90

Triadic

#155A90

#90155A

#5A9015

Split Complementary

#155A90

#90151D

#908915

Tetradic

#155A90

#891590

#904B15

#1D9015

Color Blindness Simulation

Original

#155A90

Protanopia

#333383

Deuteranopia

#2F2A80

Tritanopia

#187976

Achromatopsia

#4F4F4F

CSS Usage

background-color: #155A90;
color: #155A90;
border-color: #155A90;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F3F8FC
100
#E2EFF8
200
#C1DFF6
300
#94C7EF
400
#5AA9E7
500
#218BDE
600
#1A6FB2
700
#15598E
800
#10466F
900
#103451
950
#0A2133

Contrast Checker

Text on white

7.25:1

AA Pass AAA Pass

Text on black

2.9:1

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