#643121#643121

#643121 is a dark, moderate red. Relative luminance 0.050; OKLCH L 37.7% C 0.078 H 38.1°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#643121
RGB	rgb(100, 49, 33)
HSL	hsl(14, 50%, 26%)
HSV	hsv(14, 67%, 39%)
CMYK	cmyk(0%, 51%, 67%, 60.8%)
CIE-LAB	lab(26.78, 21.41, 20.49)
CIE-LCH	lch(26.78, 29.63, 43.74°)
OKLab	oklab(37.69% 0.0616 0.0483)
OKLCH	oklch(37.69% 0.078 38.1)
XYZ	xyz(6.6289, 5.0165, 2.0577)
Luminance	0.0502 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643121 #215464

analogous

#642132 #643121 #645221

triadic

#643121 #216431 #312164

tetradic

#643121 #326421 #215464 #522164

square

#643121 #326421 #215464 #522164

split-complementary

#643121 #216452 #213264

monochromatic

#170B08 #361A12 #643121 #924830 #C05E40

Accessibility & contrast

On white

10.48

#643121 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#643121 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643121

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643121	#FFFFFF	#000000	##FFFFFF
##643121	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E391F

Deuteranopia (green-blind)

#4B4420

Tritanopia (blue-blind)

#6E282D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #643121;
/* rgb */ color: rgb(100, 49, 33);
/* oklch */ color: oklch(37.7% 0.078 38.1);

Tailwind

colors: {
  custom: {
    50: '#946a5c',
    500: '#643121',
    950: '#000000',
  },
}

SCSS

$custom: #643121;
$custom-light: #946a5c;
$custom-dark: #000000;

JSON

{
  "hex": "#643121",
  "rgb": {
    "r": 100,
    "g": 49,
    "b": 33
  },
  "hsl": {
    "h": 14.328,
    "s": 50.376,
    "l": 26.078
  },
  "oklch": {
    "l": 0.37687,
    "c": 0.0783,
    "h": 38.1
  },
  "luminance": 0.05016
}

Semantic roles & 50–950 ramp

primary

#643121

secondary

#498598

accent

#B8DA4E

background

#F9F6F5

surface

#F2EBE9

border

#CCC6C5

text

#0E0604

muted

#7E7A79

Preview Lab

Preview with #643121

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →