#405263

#405263

Color Values

HEX

#405263

RGB

64, 82, 99

HSL

209.1, 21.5%, 32.0%

HSV

209.1, 35.4%, 38.8%

CMYK

35.4%, 17.2%, 0.0%, 61.2%

OKLCH

0.4303 0.0361 247.2

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#405263

#635140

Analogous

#406363

#404163

#405263

Triadic

#405263

#634052

#526340

Split Complementary

#405263

#634041

#636340

Tetradic

#405263

#634063

#635140

#416340

Color Blindness Simulation

Original

#405263

Protanopia

#48485F

Deuteranopia

#47455E

Tritanopia

#415C5B

Achromatopsia

#4F4F4F

CSS Usage

background-color: #405263;
color: #405263;
border-color: #405263;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F6F7F9
100
#EAEDF0
200
#D4DCE3
300
#B5C2CF
400
#8CA1B5
500
#64809B
600
#50677C
700
#405263
800
#32404D
900
#27313A
950
#191F25

Contrast Checker

Text on white

8.06:1

AA Pass AAA Pass

Text on black

2.61:1

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