#642F2B#642F2B

#642F2B is a dark, moderate red. Relative luminance 0.049; OKLCH L 37.5% C 0.077 H 25.9°. Best body text is #FFFFFF at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#642F2B
RGB	rgb(100, 47, 43)
HSL	hsl(4, 40%, 28%)
HSV	hsv(4, 57%, 39%)
CMYK	cmyk(0%, 53%, 57%, 60.8%)
CIE-LAB	lab(26.50, 23.45, 13.68)
CIE-LCH	lch(26.50, 27.15, 30.25°)
OKLab	oklab(37.53% 0.0697 0.0338)
OKLCH	oklch(37.53% 0.077 25.9)
XYZ	xyz(6.7086, 4.9175, 2.8809)
Luminance	0.0492 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#642F2B #2B6064

analogous

#642B43 #642F2B #644B2B

triadic

#642F2B #2B642F #2F2B64

tetradic

#642F2B #43642B #2B6064 #4B2B64

square

#642F2B #43642B #2B6064 #4B2B64

split-complementary

#642F2B #2B644B #2B4364

monochromatic

#150A09 #391B19 #642F2B #8F433D #B55B54

Accessibility & contrast

On white

10.59

#642F2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#642F2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #642F2B

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##642F2B	#FFFFFF	#000000	##FFFFFF
##642F2B	1.00	10.59	1.98	10.59
#FFFFFF	10.59	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B382A

Deuteranopia (green-blind)

#49432A

Tritanopia (blue-blind)

#6D272E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #642f2b;
/* rgb */ color: rgb(100, 47, 43);
/* oklch */ color: oklch(37.5% 0.077 25.9);

Tailwind

colors: {
  custom: {
    50: '#946964',
    500: '#642f2b',
    950: '#000000',
  },
}

SCSS

$custom: #642f2b;
$custom-light: #946964;
$custom-dark: #000000;

JSON

{
  "hex": "#642f2b",
  "rgb": {
    "r": 100,
    "g": 47,
    "b": 43
  },
  "hsl": {
    "h": 4.211,
    "s": 39.86,
    "l": 28.039
  },
  "oklch": {
    "l": 0.37531,
    "c": 0.0774,
    "h": 25.9
  },
  "luminance": 0.04917
}

Semantic roles & 50–950 ramp

primary

#642F2B

secondary

#559296

accent

#C7D058

background

#F9F6F5

surface

#F2EBEA

border

#CCC6C6

text

#0E0605

muted

#7E7A79

Preview Lab

Preview with #642F2B

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

Preview Lab → · Contrast checker → · Palette generator →