#641828#641828

#641828 is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.1% C 0.108 H 12.9°. Best body text is #FFFFFF at 12.33:1 contrast (WCAG AA passes).

Color values

HEX	#641828
RGB	rgb(100, 24, 40)
HSL	hsl(347, 61%, 24%)
HSV	hsv(347, 76%, 39%)
CMYK	cmyk(0%, 76%, 60%, 60.8%)
CIE-LAB	lab(22.00, 34.89, 9.67)
CIE-LCH	lch(22.00, 36.21, 15.49°)
OKLab	oklab(34.13% 0.1053 0.0241)
OKLCH	oklch(34.13% 0.108 12.9)
XYZ	xyz(5.9657, 3.5166, 2.3717)
Luminance	0.0352 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641828 #186454

analogous

#64184E #641828 #642E18

triadic

#641828 #286418 #182864

tetradic

#641828 #4E6418 #186454 #2E1864

square

#641828 #4E6418 #186454 #2E1864

split-complementary

#641828 #18642E #184E64

monochromatic

#19060A #330C14 #641828 #95243C #C7304F

Accessibility & contrast

On white

12.33

#641828 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#641828 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641828

12.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641828	#FFFFFF	#000000	##FFFFFF
##641828	1.00	12.33	1.70	12.33
#FFFFFF	12.33	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2B28

Deuteranopia (green-blind)

#3F3A26

Tritanopia (blue-blind)

#6E051F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641828;
/* rgb */ color: rgb(100, 24, 40);
/* oklch */ color: oklch(34.1% 0.108 12.9);

Tailwind

colors: {
  custom: {
    50: '#955b61',
    500: '#641828',
    950: '#000000',
  },
}

SCSS

$custom: #641828;
$custom-light: #955b61;
$custom-dark: #000000;

JSON

{
  "hex": "#641828",
  "rgb": {
    "r": 100,
    "g": 24,
    "b": 40
  },
  "hsl": {
    "h": 347.368,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.34131,
    "c": 0.108,
    "h": 12.9
  },
  "luminance": 0.03516
}

Semantic roles & 50–950 ramp

primary

#641828

secondary

#3E9A87

accent

#E4C343

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #641828

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

Preview Lab → · Contrast checker → · Palette generator →