#641B1E#641B1E

#641B1E is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.3% C 0.105 H 22.4°. Best body text is #FFFFFF at 12.23:1 contrast (WCAG AA passes).

Color values

HEX	#641B1E
RGB	rgb(100, 27, 30)
HSL	hsl(358, 57%, 25%)
HSV	hsv(358, 73%, 39%)
CMYK	cmyk(0%, 73%, 70%, 60.8%)
CIE-LAB	lab(22.26, 32.87, 16.87)
CIE-LCH	lch(22.26, 36.94, 27.17°)
OKLab	oklab(34.25% 0.0968 0.0398)
OKLCH	oklch(34.25% 0.105 22.4)
XYZ	xyz(5.8824, 3.5878, 1.6108)
Luminance	0.0359 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B1E #1B6461

analogous

#641B43 #641B1E #643C1B

triadic

#641B1E #1E641B #1B1E64

tetradic

#641B1E #43641B #1B6461 #3C1B64

square

#641B1E #43641B #1B6461 #3C1B64

split-complementary

#641B1E #1B643C #1B4364

monochromatic

#180707 #340E10 #641B1E #94282C #C4353B

Accessibility & contrast

On white

12.23

#641B1E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#641B1E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B1E

12.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B1E	#FFFFFF	#000000	##FFFFFF
##641B1E	1.00	12.23	1.72	12.23
#FFFFFF	12.23	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2B1E

Deuteranopia (green-blind)

#413B1C

Tritanopia (blue-blind)

#6E071D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b1e;
/* rgb */ color: rgb(100, 27, 30);
/* oklch */ color: oklch(34.3% 0.105 22.4);

Tailwind

colors: {
  custom: {
    50: '#965d59',
    500: '#641b1e',
    950: '#000000',
  },
}

SCSS

$custom: #641b1e;
$custom-light: #965d59;
$custom-dark: #000000;

JSON

{
  "hex": "#641b1e",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 30
  },
  "hsl": {
    "h": 357.534,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34252,
    "c": 0.10464,
    "h": 22.4
  },
  "luminance": 0.03587
}

Semantic roles & 50–950 ramp

primary

#641B1E

secondary

#419996

accent

#E1DA47

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641B1E

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

Preview Lab → · Contrast checker → · Palette generator →