#641B2D#641B2D

#641B2D is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.6% C 0.105 H 9.8°. Best body text is #FFFFFF at 12.09:1 contrast (WCAG AA passes).

Color values

HEX	#641B2D
RGB	rgb(100, 27, 45)
HSL	hsl(345, 57%, 25%)
HSV	hsv(345, 73%, 39%)
CMYK	cmyk(0%, 73%, 55%, 60.8%)
CIE-LAB	lab(22.60, 34.06, 7.02)
CIE-LCH	lch(22.60, 34.77, 11.65°)
OKLab	oklab(34.61% 0.1034 0.0179)
OKLCH	oklch(34.61% 0.105 9.8)
XYZ	xyz(6.1216, 3.6835, 2.8707)
Luminance	0.0368 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B2D #1B6452

analogous

#641B52 #641B2D #642D1B

triadic

#641B2D #2D641B #1B2D64

tetradic

#641B2D #52641B #1B6452 #2D1B64

square

#641B2D #52641B #1B6452 #2D1B64

split-complementary

#641B2D #1B642D #1B5264

monochromatic

#18070B #340E17 #641B2D #942843 #C43558

Accessibility & contrast

On white

12.09

#641B2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#641B2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B2D

12.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B2D	#FFFFFF	#000000	##FFFFFF
##641B2D	1.00	12.09	1.74	12.09
#FFFFFF	12.09	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2D2D

Deuteranopia (green-blind)

#3F3B2B

Tritanopia (blue-blind)

#6E0D22

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641b2d;
/* rgb */ color: rgb(100, 27, 45);
/* oklch */ color: oklch(34.6% 0.105 9.8);

Tailwind

colors: {
  custom: {
    50: '#955d65',
    500: '#641b2d',
    950: '#000000',
  },
}

SCSS

$custom: #641b2d;
$custom-light: #955d65;
$custom-dark: #000000;

JSON

{
  "hex": "#641b2d",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 45
  },
  "hsl": {
    "h": 345.205,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34613,
    "c": 0.10491,
    "h": 9.8
  },
  "luminance": 0.03683
}

Semantic roles & 50–950 ramp

primary

#641B2D

secondary

#419984

accent

#E1BB47

background

#F9F5F6

surface

#F2E9EB

border

#CCC5C6

text

#0E0405

muted

#7E797A

Preview Lab

Preview with #641B2D

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

Preview Lab → · Contrast checker → · Palette generator →