#641B1A#641B1A

#641B1A is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.2% C 0.105 H 25.3°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#641B1A
RGB	rgb(100, 27, 26)
HSL	hsl(1, 59%, 25%)
HSV	hsv(1, 74%, 39%)
CMYK	cmyk(0%, 73%, 74%, 60.8%)
CIE-LAB	lab(22.19, 32.62, 19.46)
CIE-LCH	lch(22.19, 37.98, 30.81°)
OKLab	oklab(34.18% 0.0951 0.045)
OKLCH	oklch(34.18% 0.105 25.3)
XYZ	xyz(5.8345, 3.5686, 1.3587)
Luminance	0.0357 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B1A #1A6364

analogous

#641A3E #641B1A #64401A

triadic

#641B1A #1A641B #1B1A64

tetradic

#641B1A #3E641A #1A6364 #401A64

square

#641B1A #3E641A #1A6364 #401A64

split-complementary

#641B1A #1A6440 #1A3E64

monochromatic

#180706 #330E0D #641B1A #952827 #C53533

Accessibility & contrast

On white

12.25

#641B1A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#641B1A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B1A

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B1A	#FFFFFF	#000000	##FFFFFF
##641B1A	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2B19

Deuteranopia (green-blind)

#423B18

Tritanopia (blue-blind)

#6E061C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b1a;
/* rgb */ color: rgb(100, 27, 26);
/* oklch */ color: oklch(34.2% 0.105 25.3);

Tailwind

colors: {
  custom: {
    50: '#965d56',
    500: '#641b1a',
    950: '#000000',
  },
}

SCSS

$custom: #641b1a;
$custom-light: #965d56;
$custom-dark: #000000;

JSON

{
  "hex": "#641b1a",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 26
  },
  "hsl": {
    "h": 0.811,
    "s": 58.73,
    "l": 24.706
  },
  "oklch": {
    "l": 0.34179,
    "c": 0.10517,
    "h": 25.3
  },
  "luminance": 0.03568
}

Semantic roles & 50–950 ramp

primary

#641B1A

secondary

#40989A

accent

#E0E246

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641B1A

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

Preview Lab → · Contrast checker → · Palette generator →