#640809

#640809

Color Values

HEX

#640809

RGB

100, 8, 9

HSL

359.3, 85.2%, 21.2%

HSV

359.3, 92.0%, 39.2%

CMYK

0.0%, 92.0%, 91.0%, 60.8%

OKLCH

0.3222 0.1234 27.4

Properties

Warm Dark Nearest: RAL 3011 Brown Red

Color Harmonies

Complementary

#640809

#086463

Analogous

#640837

#643508

#640809

Triadic

#640809

#096408

#080964

Split Complementary

#640809

#086435

#083764

Tetradic

#640809

#376408

#086463

#350864

Color Blindness Simulation

Original

#640809

Protanopia

#3C3B09

Deuteranopia

#424809

Tritanopia

#5F0909

Achromatopsia

#1C1C1C

CSS Usage

background-color: #640809;
color: #640809;
border-color: #640809;
Nearest Tailwind: Red 900 #7F1D1D

Tailwind Shades

50
#FDF2F2
100
#FAE0E1
200
#FABDBE
300
#F68E8F
400
#F15052
500
#EC1315
600
#BD0F11
700
#970C0E
800
#76090B
900
#560B0C
950
#360708

Contrast Checker

Text on white

13.29:1

AA Pass AAA Pass

Text on black

1.58:1

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