#64131B#64131B

#64131B is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.3% C 0.113 H 21.0°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#64131B
RGB	rgb(100, 19, 27)
HSL	hsl(354, 68%, 23%)
HSV	hsv(354, 81%, 39%)
CMYK	cmyk(0%, 81%, 73%, 60.8%)
CIE-LAB	lab(21.04, 35.91, 17.39)
CIE-LCH	lch(21.04, 39.90, 25.84°)
OKLab	oklab(33.32% 0.1058 0.0406)
OKLCH	oklch(33.32% 0.113 21)
XYZ	xyz(5.6869, 3.2551, 1.3655)
Luminance	0.0325 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64131B #13645C

analogous

#641343 #64131B #643313

triadic

#64131B #1B6413 #131B64

tetradic

#64131B #436413 #13645C #331364

square

#64131B #436413 #13645C #331364

split-complementary

#64131B #136433 #134364

monochromatic

#1A0507 #31090D #64131B #971D29 #CB2737

Accessibility & contrast

On white

12.72

#64131B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#64131B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64131B

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64131B	#FFFFFF	#000000	##FFFFFF
##64131B	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281B

Deuteranopia (green-blind)

#3F3918

Tritanopia (blue-blind)

#6F0017

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #64131b;
/* rgb */ color: rgb(100, 19, 27);
/* oklch */ color: oklch(33.3% 0.113 21.0);

Tailwind

colors: {
  custom: {
    50: '#975957',
    500: '#64131b',
    950: '#000000',
  },
}

SCSS

$custom: #64131b;
$custom-light: #975957;
$custom-dark: #000000;

JSON

{
  "hex": "#64131b",
  "rgb": {
    "r": 100,
    "g": 19,
    "b": 27
  },
  "hsl": {
    "h": 354.074,
    "s": 68.067,
    "l": 23.333
  },
  "oklch": {
    "l": 0.33325,
    "c": 0.11327,
    "h": 21
  },
  "luminance": 0.03254
}

Semantic roles & 50–950 ramp

primary

#64131B

secondary

#379C92

accent

#EBDA3D

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #64131B

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

Preview Lab → · Contrast checker → · Palette generator →