#641C21#641C21

#641C21 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.4% C 0.103 H 20.6°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#641C21
RGB	rgb(100, 28, 33)
HSL	hsl(356, 56%, 25%)
HSV	hsv(356, 72%, 39%)
CMYK	cmyk(0%, 72%, 67%, 60.8%)
CIE-LAB	lab(22.48, 32.62, 15.11)
CIE-LCH	lch(22.48, 35.95, 24.86°)
OKLab	oklab(34.44% 0.0966 0.0363)
OKLCH	oklch(34.44% 0.103 20.6)
XYZ	xyz(5.9459, 3.6505, 1.8301)
Luminance	0.0365 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641C21 #1C645F

analogous

#641C45 #641C21 #643B1C

triadic

#641C21 #21641C #1C2164

tetradic

#641C21 #45641C #1C645F #3B1C64

square

#641C21 #45641C #1C645F #3B1C64

split-complementary

#641C21 #1C643B #1C4564

monochromatic

#180708 #340F11 #641C21 #942931 #C43741

Accessibility & contrast

On white

12.14

#641C21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641C21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641C21

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641C21	#FFFFFF	#000000	##FFFFFF
##641C21	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2C21

Deuteranopia (green-blind)

#413B1F

Tritanopia (blue-blind)

#6E0A1E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641c21;
/* rgb */ color: rgb(100, 28, 33);
/* oklch */ color: oklch(34.4% 0.103 20.6);

Tailwind

colors: {
  custom: {
    50: '#965d5c',
    500: '#641c21',
    950: '#000000',
  },
}

SCSS

$custom: #641c21;
$custom-light: #965d5c;
$custom-dark: #000000;

JSON

{
  "hex": "#641c21",
  "rgb": {
    "r": 100,
    "g": 28,
    "b": 33
  },
  "hsl": {
    "h": 355.833,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34436,
    "c": 0.10322,
    "h": 20.6
  },
  "luminance": 0.0365
}

Semantic roles & 50–950 ramp

primary

#641C21

secondary

#439993

accent

#E0D548

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #641C21

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

Preview Lab → · Contrast checker → · Palette generator →