#64101F#64101F

#64101F is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.1% C 0.116 H 17.1°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#64101F
RGB	rgb(100, 16, 31)
HSL	hsl(349, 72%, 23%)
HSV	hsv(349, 84%, 39%)
CMYK	cmyk(0%, 84%, 69%, 60.8%)
CIE-LAB	lab(20.75, 37.18, 14.27)
CIE-LCH	lch(20.75, 39.82, 21.00°)
OKLab	oklab(33.14% 0.1108 0.0341)
OKLCH	oklch(33.14% 0.116 17.1)
XYZ	xyz(5.6888, 3.1797, 1.6103)
Luminance	0.0318 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64101F #106455

analogous

#641049 #64101F #642B10

triadic

#64101F #1F6410 #101F64

tetradic

#64101F #496410 #106455 #2B1064

square

#64101F #496410 #106455 #2B1064

split-complementary

#64101F #10642B #104964

monochromatic

#1A0408 #2F080F #64101F #99182F #CE2140

Accessibility & contrast

On white

12.84

#64101F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#64101F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64101F

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64101F	#FFFFFF	#000000	##FFFFFF
##64101F	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29271F

Deuteranopia (green-blind)

#3E381D

Tritanopia (blue-blind)

#6E0017

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #64101f;
/* rgb */ color: rgb(100, 16, 31);
/* oklch */ color: oklch(33.1% 0.116 17.1);

Tailwind

colors: {
  custom: {
    50: '#96585a',
    500: '#64101f',
    950: '#000000',
  },
}

SCSS

$custom: #64101f;
$custom-light: #96585a;
$custom-dark: #000000;

JSON

{
  "hex": "#64101f",
  "rgb": {
    "r": 100,
    "g": 16,
    "b": 31
  },
  "hsl": {
    "h": 349.286,
    "s": 72.414,
    "l": 22.745
  },
  "oklch": {
    "l": 0.33136,
    "c": 0.1159,
    "h": 17.1
  },
  "luminance": 0.03179
}

Semantic roles & 50–950 ramp

primary

#64101F

secondary

#339D8A

accent

#EFCF39

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #64101F

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

Preview Lab → · Contrast checker → · Palette generator →