#303D40

#303D40

Color Values

HEX

#303D40

RGB

48, 61, 64

HSL

191.2, 14.3%, 22.0%

HSV

191.2, 25.0%, 25.1%

CMYK

25.0%, 4.7%, 0.0%, 74.9%

OKLCH

0.3496 0.0178 213.3

Properties

Cool Dark Nearest: RAL 6012 Black Green

Color Harmonies

Complementary

#303D40

#403330

Analogous

#30403B

#303540

#303D40

Triadic

#303D40

#40303D

#3D4030

Split Complementary

#303D40

#403035

#403B30

Tetradic

#303D40

#3B3040

#403330

#354030

Color Blindness Simulation

Original

#303D40

Protanopia

#36363F

Deuteranopia

#35343F

Tritanopia

#313F3F

Achromatopsia

#3A3A3A

CSS Usage

background-color: #303D40;
color: #303D40;
border-color: #303D40;
Nearest Tailwind: Neutral 700 #404040

Tailwind Shades

50
#F6F8F8
100
#EBEFEF
200
#D6DEE0
300
#B9C7CB
400
#93A9AE
500
#6D8B92
600
#576F75
700
#46595D
800
#374549
900
#2A3437
950
#1B2123

Contrast Checker

Text on white

11.25:1

AA Pass AAA Pass

Text on black

1.87:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026