#3F99CC

#3F99CC

Color Values

HEX

#3F99CC

RGB

63, 153, 204

HSL

201,7, 58,0%, 52,4%

HSV

201,7, 69,1%, 80,0%

CMYK

69,1%, 25,0%, 0,0%, 20,0%

OKLCH

0,651 0,1138 237,2

Properties

Cool Light Nearest: deepskyblue 3

Color Harmonies

Complementary

#3F99CC

#CC723F

Analogous

#3FCCB9

#3F53CC

#3F99CC

Triadic

#3F99CC

#CC3F99

#99CC3F

Split Complementary

#3F99CC

#CC3F53

#CCB93F

Tetradic

#3F99CC

#B93FCC

#CC723F

#53CC3F

Color Blindness Simulation

Original

#3F99CC

Protanopia

#6667C0

Deuteranopia

#615ABD

Tritanopia

#44B6B4

Achromatopsia

#8A8A8A

CSS Usage

background-color: #3F99CC;
color: #3F99CC;
border-color: #3F99CC;
Nearest Tailwind: Sky 500 #0EA5E9

Tailwind Shades

50
#F4F8FB
100
#E4F0F6
200
#C7E1F0
300
#9ECCE5
400
#6AB0D7
500
#3694C9
600
#2B76A1
700
#225F81
800
#1B4A65
900
#17374A
950
#0F232F

Contrast Checker

Text on white

3,16:1

AA Fail AAA Fail

Text on black

6,64:1

AA Pass AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

يناير 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

يناير 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

يناير 15, 2026