#642F37#642F37

#642F37 is a dark, moderate red. Relative luminance 0.050; OKLCH L 37.8% C 0.077 H 11.9°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#642F37
RGB	rgb(100, 47, 55)
HSL	hsl(351, 36%, 29%)
HSV	hsv(351, 53%, 39%)
CMYK	cmyk(0%, 53%, 45%, 60.8%)
CIE-LAB	lab(26.79, 24.77, 6.11)
CIE-LCH	lch(26.79, 25.51, 13.86°)
OKLab	oklab(37.85% 0.075 0.0159)
OKLCH	oklch(37.85% 0.077 11.9)
XYZ	xyz(6.9620, 5.0189, 4.2158)
Luminance	0.0502 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#642F37 #2F645C

analogous

#642F52 #642F37 #64422F

triadic

#642F37 #37642F #2F3764

tetradic

#642F37 #52642F #2F645C #422F64

square

#642F37 #52642F #2F645C #422F64

split-complementary

#642F37 #2F6442 #2F5264

monochromatic

#150A0B #3A1B20 #642F37 #8E434E #B25B68

Accessibility & contrast

On white

10.48

#642F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#642F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #642F37

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##642F37	#FFFFFF	#000000	##FFFFFF
##642F37	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)

#393937

Deuteranopia (green-blind)

#474336

Tritanopia (blue-blind)

#6C2932

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #642f37;
/* rgb */ color: rgb(100, 47, 55);
/* oklch */ color: oklch(37.8% 0.077 11.9);

Tailwind

colors: {
  custom: {
    50: '#93696d',
    500: '#642f37',
    950: '#000000',
  },
}

SCSS

$custom: #642f37;
$custom-light: #93696d;
$custom-dark: #000000;

JSON

{
  "hex": "#642f37",
  "rgb": {
    "r": 100,
    "g": 47,
    "b": 55
  },
  "hsl": {
    "h": 350.943,
    "s": 36.054,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37846,
    "c": 0.0767,
    "h": 11.9
  },
  "luminance": 0.05018
}

Semantic roles & 50–950 ramp

primary

#642F37

secondary

#59968C

accent

#CCBB5C

background

#F9F6F6

surface

#F2EBEB

border

#CCC6C6

text

#0D0607

muted

#7E7A7A

Preview Lab

Preview with #642F37

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

Preview Lab → · Contrast checker → · Palette generator →