#641B20#641B20

#641B20 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.3% C 0.104 H 20.8°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#641B20
RGB	rgb(100, 27, 32)
HSL	hsl(356, 57%, 25%)
HSV	hsv(356, 73%, 39%)
CMYK	cmyk(0%, 73%, 68%, 60.8%)
CIE-LAB	lab(22.30, 33.00, 15.56)
CIE-LCH	lch(22.30, 36.49, 25.24°)
OKLab	oklab(34.29% 0.0976 0.0372)
OKLCH	oklch(34.29% 0.104 20.8)
XYZ	xyz(5.9088, 3.5983, 1.7496)
Luminance	0.0360 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B20 #1B645F

analogous

#641B45 #641B20 #643A1B

triadic

#641B20 #20641B #1B2064

tetradic

#641B20 #45641B #1B645F #3A1B64

square

#641B20 #45641B #1B645F #3A1B64

split-complementary

#641B20 #1B643A #1B4564

monochromatic

#180708 #340E11 #641B20 #94282F #C4353F

Accessibility & contrast

On white

12.21

#641B20 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#641B20 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B20

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B20	#FFFFFF	#000000	##FFFFFF
##641B20	1.00	12.21	1.72	12.21
#FFFFFF	12.21	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2B20

Deuteranopia (green-blind)

#413B1E

Tritanopia (blue-blind)

#6E081D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b20;
/* rgb */ color: rgb(100, 27, 32);
/* oklch */ color: oklch(34.3% 0.104 20.8);

Tailwind

colors: {
  custom: {
    50: '#965d5b',
    500: '#641b20',
    950: '#000000',
  },
}

SCSS

$custom: #641b20;
$custom-light: #965d5b;
$custom-dark: #000000;

JSON

{
  "hex": "#641b20",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 32
  },
  "hsl": {
    "h": 355.89,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34292,
    "c": 0.10446,
    "h": 20.8
  },
  "luminance": 0.03597
}

Semantic roles & 50–950 ramp

primary

#641B20

secondary

#419993

accent

#E1D647

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #641B20

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

Preview Lab → · Contrast checker → · Palette generator →