#64101A#64101A

#64101A is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.0% C 0.116 H 20.6°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#64101A
RGB	rgb(100, 16, 26)
HSL	hsl(353, 72%, 23%)
HSV	hsv(353, 84%, 39%)
CMYK	cmyk(0%, 84%, 74%, 60.8%)
CIE-LAB	lab(20.66, 36.88, 17.61)
CIE-LCH	lch(20.66, 40.87, 25.52°)
OKLab	oklab(33.04% 0.1086 0.0409)
OKLCH	oklch(33.04% 0.116 20.6)
XYZ	xyz(5.6279, 3.1554, 1.2898)
Luminance	0.0315 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64101A #10645A

analogous

#641044 #64101A #643010

triadic

#64101A #1A6410 #101A64

tetradic

#64101A #446410 #10645A #301064

square

#64101A #446410 #10645A #301064

split-complementary

#64101A #106430 #104464

monochromatic

#1A0407 #2F080C #64101A #991828 #CE2135

Accessibility & contrast

On white

12.88

#64101A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#64101A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64101A

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64101A	#FFFFFF	#000000	##FFFFFF
##64101A	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A261A

Deuteranopia (green-blind)

#3E3817

Tritanopia (blue-blind)

#6F0015

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #64101a;
/* rgb */ color: rgb(100, 16, 26);
/* oklch */ color: oklch(33.0% 0.116 20.6);

Tailwind

colors: {
  custom: {
    50: '#975856',
    500: '#64101a',
    950: '#000000',
  },
}

SCSS

$custom: #64101a;
$custom-light: #975856;
$custom-dark: #000000;

JSON

{
  "hex": "#64101a",
  "rgb": {
    "r": 100,
    "g": 16,
    "b": 26
  },
  "hsl": {
    "h": 352.857,
    "s": 72.414,
    "l": 22.745
  },
  "oklch": {
    "l": 0.33036,
    "c": 0.11604,
    "h": 20.6
  },
  "luminance": 0.03154
}

Semantic roles & 50–950 ramp

primary

#64101A

secondary

#339D90

accent

#EFD939

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #64101A

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

Preview Lab → · Contrast checker → · Palette generator →