#641C1D#641C1D

#641C1D is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.4% C 0.104 H 23.7°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#641C1D
RGB	rgb(100, 28, 29)
HSL	hsl(359, 56%, 25%)
HSV	hsv(359, 72%, 39%)
CMYK	cmyk(0%, 72%, 71%, 60.8%)
CIE-LAB	lab(22.41, 32.35, 17.72)
CIE-LCH	lch(22.41, 36.89, 28.71°)
OKLab	oklab(34.36% 0.0949 0.0416)
OKLCH	oklch(34.36% 0.104 23.7)
XYZ	xyz(5.8932, 3.6294, 1.5524)
Luminance	0.0363 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641C1D #1C6463

analogous

#641C41 #641C1D #643F1C

triadic

#641C1D #1D641C #1C1D64

tetradic

#641C1D #41641C #1C6463 #3F1C64

square

#641C1D #41641C #1C6463 #3F1C64

split-complementary

#641C1D #1C643F #1C4164

monochromatic

#180707 #340F0F #641C1D #94292B #C43739

Accessibility & contrast

On white

12.17

#641C1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641C1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641C1D

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641C1D	#FFFFFF	#000000	##FFFFFF
##641C1D	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C1C

Deuteranopia (green-blind)

#423B1B

Tritanopia (blue-blind)

#6E091D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641c1d;
/* rgb */ color: rgb(100, 28, 29);
/* oklch */ color: oklch(34.4% 0.104 23.7);

Tailwind

colors: {
  custom: {
    50: '#965d59',
    500: '#641c1d',
    950: '#000000',
  },
}

SCSS

$custom: #641c1d;
$custom-light: #965d59;
$custom-dark: #000000;

JSON

{
  "hex": "#641c1d",
  "rgb": {
    "r": 100,
    "g": 28,
    "b": 29
  },
  "hsl": {
    "h": 359.167,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34357,
    "c": 0.10363,
    "h": 23.7
  },
  "luminance": 0.03629
}

Semantic roles & 50–950 ramp

primary

#641C1D

secondary

#439998

accent

#E0DD48

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641C1D

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

Preview Lab → · Contrast checker → · Palette generator →