#3580CB

#3580CB

Color Values

HEX

#3580CB

RGB

53, 128, 203

HSL

210.0, 59.1%, 50.2%

HSV

210.0, 73.9%, 79.6%

CMYK

73.9%, 36.9%, 0.0%, 20.4%

OKLCH

0.5895 0.1367 251.3

Properties

Cool Light Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#3580CB

#CB8035

Analogous

#35CBCB

#3535CB

#3580CB

Triadic

#3580CB

#CB3580

#80CB35

Split Complementary

#3580CB

#CB3535

#CBCB35

Tetradic

#3580CB

#CB35CB

#CB8035

#35CB35

Color Blindness Simulation

Original

#3580CB

Protanopia

#5556B9

Deuteranopia

#514CB4

Tritanopia

#39ABA7

Achromatopsia

#757575

CSS Usage

background-color: #3580CB;
color: #3580CB;
border-color: #3580CB;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F4F7FB
100
#E4EDF6
200
#C6DBF0
300
#9EC2E6
400
#69A1D8
500
#3480CB
600
#2A66A2
700
#215282
800
#1A4065
900
#17304A
950
#0E1F2F

Contrast Checker

Text on white

4.12:1

AA Fail AAA Fail

Text on black

5.1:1

AA Pass 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