#3F8FDD

#3F8FDD

Color Values

HEX

#3F8FDD

RGB

63, 143, 221

HSL

209.6, 69.9%, 55.7%

HSV

209.6, 71.5%, 86.7%

CMYK

71.5%, 35.3%, 0.0%, 13.3%

OKLCH

0.637 0.1411 250.5

Properties

Cool Light Nearest: cornflowerblue

Color Harmonies

Complementary

#3F8FDD

#DD8D3F

Analogous

#3FDDDC

#3F40DD

#3F8FDD

Triadic

#3F8FDD

#DD3F8F

#8FDD3F

Split Complementary

#3F8FDD

#DD3F40

#DDDC3F

Tetradic

#3F8FDD

#DC3FDD

#DD8D3F

#40DD3F

Color Blindness Simulation

Original

#3F8FDD

Protanopia

#6262CA

Deuteranopia

#5D57C6

Tritanopia

#43BBB8

Achromatopsia

#848484

CSS Usage

background-color: #3F8FDD;
color: #3F8FDD;
border-color: #3F8FDD;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F7FC
100
#E3EDF8
200
#C2DCF4
300
#97C2ED
400
#5FA2E3
500
#2681D9
600
#1F67AD
700
#19528B
800
#13406C
900
#12314F
950
#0B1F32

Contrast Checker

Text on white

3.4:1

AA Fail AAA Fail

Text on black

6.18:1

AA Pass 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