#1F4871

#1F4871

Color Values

HEX

#1F4871

RGB

31, 72, 113

HSL

210.0, 56.9%, 28.2%

HSV

210.0, 72.6%, 44.3%

CMYK

72.6%, 36.3%, 0.0%, 55.7%

OKLCH

0.3936 0.0836 250.8

Properties

Cool Dark Nearest: Midnight Blue

Color Harmonies

Complementary

#1F4871

#71481F

Analogous

#1F7171

#1F1F71

#1F4871

Triadic

#1F4871

#711F48

#48711F

Split Complementary

#1F4871

#711F1F

#71711F

Tetradic

#1F4871

#711F71

#71481F

#1F711F

Color Blindness Simulation

Original

#1F4871

Protanopia

#313167

Deuteranopia

#2E2B65

Tritanopia

#215F5E

Achromatopsia

#424242

CSS Usage

background-color: #1F4871;
color: #1F4871;
border-color: #1F4871;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F4F7FB
100
#E5EDF6
200
#C7DBF0
300
#9FC2E5
400
#6BA1D6
500
#3780C8
600
#2C66A0
700
#235280
800
#1B4064
900
#183049
950
#0F1F2E

Contrast Checker

Text on white

9.44:1

AA Pass AAA Pass

Text on black

2.22:1

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