#640505

#640505

Color Values

HEX

#640505

RGB

100, 5, 5

HSL

0.0, 90.5%, 20.6%

HSV

0.0, 95.0%, 39.2%

CMYK

0.0%, 95.0%, 95.0%, 60.8%

OKLCH

0.3199 0.1258 28.3

Properties

Warm Dark Nearest: RAL 3011 Brown Red

Color Harmonies

Complementary

#640505

#056464

Analogous

#640535

#643505

#640505

Triadic

#640505

#056405

#050564

Split Complementary

#640505

#056435

#053564

Tetradic

#640505

#356405

#056464

#350564

Color Blindness Simulation

Original

#640505

Protanopia

#3B3A05

Deuteranopia

#404805

Tritanopia

#5F0505

Achromatopsia

#191919

CSS Usage

background-color: #640505;
color: #640505;
border-color: #640505;
Nearest Tailwind: Red 900 #7F1D1D

Tailwind Shades

50
#FDF1F1
100
#FBDFDF
200
#FCBBBB
300
#F98A8A
400
#F64B4B
500
#F30C0C
600
#C20A0A
700
#9B0808
800
#790606
900
#580909
950
#380606

Contrast Checker

Text on white

13.41:1

AA Pass AAA Pass

Text on black

1.57:1

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