#643333#643333

#643333 is a dark, moderate red. Relative luminance 0.053; OKLCH L 38.4% C 0.071 H 20.9°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#643333
RGB	rgb(100, 51, 51)
HSL	hsl(0, 32%, 30%)
HSV	hsv(0, 49%, 39%)
CMYK	cmyk(0%, 49%, 49%, 60.8%)
CIE-LAB	lab(27.62, 21.94, 9.92)
CIE-LCH	lch(27.62, 24.08, 24.33°)
OKLab	oklab(38.44% 0.066 0.0252)
OKLCH	oklch(38.44% 0.071 20.9)
XYZ	xyz(7.0373, 5.3167, 3.7869)
Luminance	0.0532 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643333 #336464

analogous

#64334C #643333 #644C33

triadic

#643333 #336433 #333364

tetradic

#643333 #4C6433 #336464 #4C3364

square

#643333 #4C6433 #336464 #4C3364

split-complementary

#643333 #33644C #334C64

monochromatic

#140A0A #3B1E1E #643333 #8D4848 #AF6262

Accessibility & contrast

On white

10.18

#643333 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#643333 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643333

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643333	#FFFFFF	#000000	##FFFFFF
##643333	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3B33

Deuteranopia (green-blind)

#4A4532

Tritanopia (blue-blind)

#6D2C33

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #643333;
/* rgb */ color: rgb(100, 51, 51);
/* oklch */ color: oklch(38.4% 0.071 20.9);

Tailwind

colors: {
  custom: {
    50: '#936c6a',
    500: '#643333',
    950: '#000000',
  },
}

SCSS

$custom: #643333;
$custom-light: #936c6a;
$custom-dark: #000000;

JSON

{
  "hex": "#643333",
  "rgb": {
    "r": 100,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 32.45,
    "l": 29.608
  },
  "oklch": {
    "l": 0.38442,
    "c": 0.07061,
    "h": 20.9
  },
  "luminance": 0.05316
}

Semantic roles & 50–950 ramp

primary

#643333

secondary

#5E9595

accent

#C9C95F

background

#F9F6F6

surface

#F2EBEB

border

#CCC6C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #643333

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

Preview Lab → · Contrast checker → · Palette generator →