#1F3B4F

#1F3B4F

Color Values

HEX

#1F3B4F

RGB

31, 59, 79

HSL

205.0, 43.6%, 21.6%

HSV

205.0, 60.8%, 31.0%

CMYK

60.8%, 25.3%, 0.0%, 69.0%

OKLCH

0.3398 0.0491 241.3

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#1F3B4F

#4F331F

Analogous

#1F4F4B

#1F234F

#1F3B4F

Triadic

#1F3B4F

#4F1F3B

#3B4F1F

Split Complementary

#1F3B4F

#4F1F23

#4F4B1F

Tetradic

#1F3B4F

#4B1F4F

#4F331F

#234F1F

Color Blindness Simulation

Original

#1F3B4F

Protanopia

#2B2B4A

Deuteranopia

#2A2749

Tritanopia

#204646

Achromatopsia

#363636

CSS Usage

background-color: #1F3B4F;
color: #1F3B4F;
border-color: #1F3B4F;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F5F8FA
100
#E7EEF4
200
#CCDEEB
300
#A7C6DC
400
#78A8CA
500
#4889B7
600
#3A6D92
700
#2E5875
800
#24445C
900
#1D3443
950
#13212B

Contrast Checker

Text on white

11.69:1

AA Pass AAA Pass

Text on black

1.8:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026