#1F77D3

#1F77D3

Color Values

HEX

#1F77D3

RGB

31, 119, 211

HSL

210.7, 74.4%, 47.5%

HSV

210.7, 85.3%, 82.7%

CMYK

85.3%, 43.6%, 0.0%, 17.3%

OKLCH

0.5685 0.1624 253.8

Properties

Cool Light Nearest: Navy Blue

Color Harmonies

Complementary

#1F77D3

#D37B1F

Analogous

#1FD1D3

#211FD3

#1F77D3

Triadic

#1F77D3

#D31F77

#77D31F

Split Complementary

#1F77D3

#D3211F

#D1D31F

Tetradic

#1F77D3

#D31FD1

#D37B1F

#1FD321

Color Blindness Simulation

Original

#1F77D3

Protanopia

#4546BD

Deuteranopia

#4039B7

Tritanopia

#23ABA7

Achromatopsia

#6B6B6B

CSS Usage

background-color: #1F77D3;
color: #1F77D3;
border-color: #1F77D3;
Nearest Tailwind: Blue 500 #3B82F6

Tailwind Shades

50
#F3F7FC
100
#E2EDF8
200
#C1DBF6
300
#94C1EF
400
#5A9FE7
500
#217DDE
600
#1A64B2
700
#15508E
800
#103F6F
900
#103051
950
#0A1E33

Contrast Checker

Text on white

4.53:1

AA Pass AAA Fail

Text on black

4.64:1

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