#64281B#64281B

#64281B is a dark, moderate red. Relative luminance 0.043; OKLCH L 36.0% C 0.090 H 33.7°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#64281B
RGB	rgb(100, 40, 27)
HSL	hsl(11, 57%, 25%)
HSV	hsv(11, 73%, 39%)
CMYK	cmyk(0%, 60%, 73%, 60.8%)
CIE-LAB	lab(24.66, 26.15, 21.73)
CIE-LCH	lch(24.66, 34.00, 39.72°)
OKLab	oklab(36.04% 0.075 0.0501)
OKLCH	oklch(36.04% 0.09 33.7)
XYZ	xyz(6.2128, 4.3068, 1.5408)
Luminance	0.0431 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64281B #1B5764

analogous

#641B33 #64281B #644D1B

triadic

#64281B #1B6428 #281B64

tetradic

#64281B #33641B #1B5764 #4D1B64

square

#64281B #33641B #1B5764 #4D1B64

split-complementary

#64281B #1B644D #1B3364

monochromatic

#180A07 #34150E #64281B #943B28 #C44F35

Accessibility & contrast

On white

11.28

#64281B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#64281B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64281B

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64281B	#FFFFFF	#000000	##FFFFFF
##64281B	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383219

Deuteranopia (green-blind)

#473F1A

Tritanopia (blue-blind)

#6E1C25

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #64281b;
/* rgb */ color: rgb(100, 40, 27);
/* oklch */ color: oklch(36.0% 0.090 33.7);

Tailwind

colors: {
  custom: {
    50: '#956457',
    500: '#64281b',
    950: '#000000',
  },
}

SCSS

$custom: #64281b;
$custom-light: #956457;
$custom-dark: #000000;

JSON

{
  "hex": "#64281b",
  "rgb": {
    "r": 100,
    "g": 40,
    "b": 27
  },
  "hsl": {
    "h": 10.685,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.36044,
    "c": 0.09022,
    "h": 33.7
  },
  "luminance": 0.04306
}

Semantic roles & 50–950 ramp

primary

#64281B

secondary

#418A99

accent

#C5E147

background

#F9F6F5

surface

#F2EBE9

border

#CCC6C5

text

#0E0503

muted

#7E7A78

Preview Lab

Preview with #64281B

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

Preview Lab → · Contrast checker → · Palette generator →