#1F3440

#1F3440

Color Values

HEX

#1F3440

RGB

31, 52, 64

HSL

201.8, 34.7%, 18.6%

HSV

201.8, 51.6%, 25.1%

CMYK

51.6%, 18.8%, 0.0%, 74.9%

OKLCH

0.3129 0.0344 234.5

Properties

Cool Dark Nearest: RAL 5001 Green Blue

Color Harmonies

Complementary

#1F3440

#402B1F

Analogous

#1F403B

#1F2340

#1F3440

Triadic

#1F3440

#401F34

#34401F

Split Complementary

#1F3440

#401F23

#403B1F

Tetradic

#1F3440

#3B1F40

#402B1F

#23401F

Color Blindness Simulation

Original

#1F3440

Protanopia

#28283D

Deuteranopia

#27253C

Tritanopia

#203B3A

Achromatopsia

#303030

CSS Usage

background-color: #1F3440;
color: #1F3440;
border-color: #1F3440;
Nearest Tailwind: Cyan 950 #083344

Tailwind Shades

50
#F5F8FA
100
#E8EFF2
200
#CFDFE8
300
#ADC8D7
400
#80AAC1
500
#538CAC
600
#437089
700
#35596E
800
#2A4656
900
#213540
950
#152128

Contrast Checker

Text on white

12.94:1

AA Pass AAA Pass

Text on black

1.62:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026