#303B3F

#303B3F

Color Values

HEX

#303B3F

RGB

48, 59, 63

HSL

196.0, 13.5%, 21.8%

HSV

196.0, 23.8%, 24.7%

CMYK

23.8%, 6.3%, 0.0%, 75.3%

OKLCH

0.3439 0.0162 221.9

Properties

Cool Dark Nearest: RAL 6012 Black Green

Color Harmonies

Complementary

#303B3F

#3F3430

Analogous

#303F3C

#30343F

#303B3F

Triadic

#303B3F

#3F303B

#3B3F30

Split Complementary

#303B3F

#3F3034

#3F3C30

Tetradic

#303B3F

#3C303F

#3F3430

#343F30

Color Blindness Simulation

Original

#303B3F

Protanopia

#35353E

Deuteranopia

#34333E

Tritanopia

#313D3D

Achromatopsia

#393939

CSS Usage

background-color: #303B3F;
color: #303B3F;
border-color: #303B3F;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F6F8F8
100
#EBEEEF
200
#D6DEE0
300
#BAC6CA
400
#94A7AD
500
#6E8891
600
#586C74
700
#47575D
800
#374448
900
#2B3336
950
#1B2022

Contrast Checker

Text on white

11.52:1

AA Pass AAA Pass

Text on black

1.82:1

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