#646B1F

#646B1F

Color Values

HEX

#646B1F

RGB

100, 107, 31

HSL

65.5, 55.1%, 27.1%

HSV

65.5, 71.0%, 42.0%

CMYK

6.5%, 0.0%, 71.0%, 58.0%

OKLCH

0.5061 0.0982 114.5

Properties

Cool Dark Nearest: darkolivegreen

Color Harmonies

Complementary

#646B1F

#261F6B

Analogous

#6B4C1F

#3E6B1F

#646B1F

Triadic

#646B1F

#1F646B

#6B1F64

Split Complementary

#646B1F

#1F3E6B

#4C1F6B

Tetradic

#646B1F

#1F6B4C

#261F6B

#6B1F3E

Color Blindness Simulation

Original

#646B1F

Protanopia

#676731

Deuteranopia

#676636

Tritanopia

#644043

Achromatopsia

#646464

CSS Usage

background-color: #646B1F;
color: #646B1F;
border-color: #646B1F;
Nearest Tailwind: Lime 800 #3F6212

Tailwind Shades

50
#FAFBF4
100
#F4F6E5
200
#EBEFC8
300
#DDE4A0
400
#CBD56D
500
#B9C639
600
#949E2E
700
#767F25
800
#5C631D
900
#444818
950
#2B2E0F

Contrast Checker

Text on white

5.73:1

AA Pass AAA Fail

Text on black

3.66:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026