#1F3758

#1F3758

Color Values

HEX

#1F3758

RGB

31, 55, 88

HSL

214.7, 47.9%, 23.3%

HSV

214.7, 64.8%, 34.5%

CMYK

64.8%, 37.5%, 0.0%, 65.5%

OKLCH

0.3345 0.066 256.7

Properties

Cool Dark Nearest: RAL 5010 Gentian Blue

Color Harmonies

Complementary

#1F3758

#58401F

Analogous

#1F5358

#231F58

#1F3758

Triadic

#1F3758

#581F37

#37581F

Split Complementary

#1F3758

#58231F

#53581F

Tetradic

#1F3758

#581F53

#58401F

#1F5823

Color Blindness Simulation

Original

#1F3758

Protanopia

#292A50

Deuteranopia

#28264E

Tritanopia

#204A48

Achromatopsia

#343434

CSS Usage

background-color: #1F3758;
color: #1F3758;
border-color: #1F3758;
Nearest Tailwind: Sky 950 #082F49

Tailwind Shades

50
#F4F7FA
100
#E6ECF4
200
#CAD9EC
300
#A4BDDF
400
#739ACE
500
#4276BD
600
#355E97
700
#2B4B79
800
#213B5E
900
#1C2D45
950
#111D2C

Contrast Checker

Text on white

12.03:1

AA Pass AAA Pass

Text on black

1.75:1

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