#641D1B#641D1B

#641D1B is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.4% C 0.103 H 25.7°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#641D1B
RGB	rgb(100, 29, 27)
HSL	hsl(2, 57%, 25%)
HSV	hsv(2, 73%, 39%)
CMYK	cmyk(0%, 71%, 73%, 60.8%)
CIE-LAB	lab(22.54, 31.77, 19.22)
CIE-LCH	lch(22.54, 37.13, 31.17°)
OKLab	oklab(34.45% 0.0926 0.0446)
OKLCH	oklch(34.45% 0.103 25.7)
XYZ	xyz(5.8933, 3.6680, 1.4344)
Luminance	0.0367 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641D1B #1B6264

analogous

#641B3D #641D1B #64421B

triadic

#641D1B #1B641D #1D1B64

tetradic

#641D1B #3D641B #1B6264 #421B64

square

#641D1B #3D641B #1B6264 #421B64

split-complementary

#641D1B #1B6442 #1B3D64

monochromatic

#180707 #340F0E #641D1B #942B28 #C43935

Accessibility & contrast

On white

12.11

#641D1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641D1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641D1B

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641D1B	#FFFFFF	#000000	##FFFFFF
##641D1B	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C1A

Deuteranopia (green-blind)

#423C19

Tritanopia (blue-blind)

#6E0A1D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641d1b;
/* rgb */ color: rgb(100, 29, 27);
/* oklch */ color: oklch(34.4% 0.103 25.7);

Tailwind

colors: {
  custom: {
    50: '#965e57',
    500: '#641d1b',
    950: '#000000',
  },
}

SCSS

$custom: #641d1b;
$custom-light: #965e57;
$custom-dark: #000000;

JSON

{
  "hex": "#641d1b",
  "rgb": {
    "r": 100,
    "g": 29,
    "b": 27
  },
  "hsl": {
    "h": 1.644,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34447,
    "c": 0.10279,
    "h": 25.7
  },
  "luminance": 0.03667
}

Semantic roles & 50–950 ramp

primary

#641D1B

secondary

#419799

accent

#DDE147

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641D1B

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

Preview Lab → · Contrast checker → · Palette generator →