#641C1F#641C1F

#641C1F is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.4% C 0.103 H 22.2°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#641C1F
RGB	rgb(100, 28, 31)
HSL	hsl(358, 56%, 25%)
HSV	hsv(358, 72%, 39%)
CMYK	cmyk(0%, 72%, 69%, 60.8%)
CIE-LAB	lab(22.44, 32.48, 16.42)
CIE-LCH	lch(22.44, 36.40, 26.82°)
OKLab	oklab(34.39% 0.0958 0.039)
OKLCH	oklch(34.39% 0.103 22.2)
XYZ	xyz(5.9187, 3.6396, 1.6869)
Luminance	0.0364 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641C1F #1C6461

analogous

#641C43 #641C1F #643D1C

triadic

#641C1F #1F641C #1C1F64

tetradic

#641C1F #43641C #1C6461 #3D1C64

square

#641C1F #43641C #1C6461 #3D1C64

split-complementary

#641C1F #1C643D #1C4364

monochromatic

#180707 #340F10 #641C1F #94292E #C4373D

Accessibility & contrast

On white

12.15

#641C1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641C1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641C1F

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641C1F	#FFFFFF	#000000	##FFFFFF
##641C1F	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2C1F

Deuteranopia (green-blind)

#423B1D

Tritanopia (blue-blind)

#6E091E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641c1f;
/* rgb */ color: rgb(100, 28, 31);
/* oklch */ color: oklch(34.4% 0.103 22.2);

Tailwind

colors: {
  custom: {
    50: '#965d5a',
    500: '#641c1f',
    950: '#000000',
  },
}

SCSS

$custom: #641c1f;
$custom-light: #965d5a;
$custom-dark: #000000;

JSON

{
  "hex": "#641c1f",
  "rgb": {
    "r": 100,
    "g": 28,
    "b": 31
  },
  "hsl": {
    "h": 357.5,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34395,
    "c": 0.1034,
    "h": 22.2
  },
  "luminance": 0.03639
}

Semantic roles & 50–950 ramp

primary

#641C1F

secondary

#439996

accent

#E0D948

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641C1F

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

Preview Lab → · Contrast checker → · Palette generator →