#64271B#64271B

#64271B is a dark, moderate red. Relative luminance 0.042; OKLCH L 35.9% C 0.091 H 32.9°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#64271B
RGB	rgb(100, 39, 27)
HSL	hsl(10, 57%, 25%)
HSV	hsv(10, 73%, 39%)
CMYK	cmyk(0%, 61%, 73%, 60.8%)
CIE-LAB	lab(24.45, 26.70, 21.48)
CIE-LCH	lch(24.45, 34.27, 38.82°)
OKLab	oklab(35.89% 0.0767 0.0496)
OKLCH	oklch(35.89% 0.091 32.9)
XYZ	xyz(6.1795, 4.2403, 1.5298)
Luminance	0.0424 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64271B #1B5864

analogous

#641B34 #64271B #644C1B

triadic

#64271B #1B6427 #271B64

tetradic

#64271B #34641B #1B5864 #4C1B64

square

#64271B #34641B #1B5864 #4C1B64

split-complementary

#64271B #1B644C #1B3464

monochromatic

#180907 #34140E #64271B #943A28 #C44D35

Accessibility & contrast

On white

11.36

#64271B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#64271B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64271B

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64271B	#FFFFFF	#000000	##FFFFFF
##64271B	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37321A

Deuteranopia (green-blind)

#463F19

Tritanopia (blue-blind)

#6E1A24

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #64271b;
/* rgb */ color: rgb(100, 39, 27);
/* oklch */ color: oklch(35.9% 0.091 32.9);

Tailwind

colors: {
  custom: {
    50: '#956357',
    500: '#64271b',
    950: '#000000',
  },
}

SCSS

$custom: #64271b;
$custom-light: #956357;
$custom-dark: #000000;

JSON

{
  "hex": "#64271b",
  "rgb": {
    "r": 100,
    "g": 39,
    "b": 27
  },
  "hsl": {
    "h": 9.863,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35885,
    "c": 0.09135,
    "h": 32.9
  },
  "luminance": 0.04239
}

Semantic roles & 50–950 ramp

primary

#64271B

secondary

#418B99

accent

#C7E147

background

#F9F6F5

surface

#F2EBE9

border

#CCC6C5

text

#0E0503

muted

#7E7A78

Preview Lab

Preview with #64271B

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

Preview Lab → · Contrast checker → · Palette generator →