#64231B#64231B

#64231B is a dark, moderate red. Relative luminance 0.040; OKLCH L 35.3% C 0.096 H 29.7°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#64231B
RGB	rgb(100, 35, 27)
HSL	hsl(7, 57%, 25%)
HSV	hsv(7, 73%, 39%)
CMYK	cmyk(0%, 65%, 73%, 60.8%)
CIE-LAB	lab(23.64, 28.82, 20.53)
CIE-LCH	lch(23.64, 35.38, 35.46°)
OKLab	oklab(35.28% 0.0833 0.0475)
OKLCH	oklch(35.28% 0.096 29.7)
XYZ	xyz(6.0550, 3.9913, 1.4883)
Luminance	0.0399 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64231B #1B5C64

analogous

#641B38 #64231B #64471B

triadic

#64231B #1B6423 #231B64

tetradic

#64231B #38641B #1B5C64 #471B64

square

#64231B #38641B #1B5C64 #471B64

split-complementary

#64231B #1B6447 #1B3864

monochromatic

#180807 #34120E #64231B #943428 #C44535

Accessibility & contrast

On white

11.68

#64231B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#64231B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64231B

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64231B	#FFFFFF	#000000	##FFFFFF
##64231B	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#342F1A

Deuteranopia (green-blind)

#453E19

Tritanopia (blue-blind)

#6E1521

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #64231b;
/* rgb */ color: rgb(100, 35, 27);
/* oklch */ color: oklch(35.3% 0.096 29.7);

Tailwind

colors: {
  custom: {
    50: '#966157',
    500: '#64231b',
    950: '#000000',
  },
}

SCSS

$custom: #64231b;
$custom-light: #966157;
$custom-dark: #000000;

JSON

{
  "hex": "#64231b",
  "rgb": {
    "r": 100,
    "g": 35,
    "b": 27
  },
  "hsl": {
    "h": 6.575,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35275,
    "c": 0.09592,
    "h": 29.7
  },
  "luminance": 0.03991
}

Semantic roles & 50–950 ramp

primary

#64231B

secondary

#419099

accent

#D0E147

background

#F9F5F5

surface

#F2EAE9

border

#CCC6C5

text

#0E0503

muted

#7E7978

Preview Lab

Preview with #64231B

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

Preview Lab → · Contrast checker → · Palette generator →