#64151B#64151B

#64151B is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.5% C 0.111 H 21.8°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#64151B
RGB	rgb(100, 21, 27)
HSL	hsl(355, 65%, 24%)
HSV	hsv(355, 79%, 39%)
CMYK	cmyk(0%, 79%, 73%, 60.8%)
CIE-LAB	lab(21.30, 35.17, 17.72)
CIE-LCH	lch(21.30, 39.38, 26.73°)
OKLab	oklab(33.52% 0.1034 0.0413)
OKLCH	oklch(33.52% 0.111 21.8)
XYZ	xyz(5.7222, 3.3257, 1.3773)
Luminance	0.0333 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64151B #15645E

analogous

#641542 #64151B #643615

triadic

#64151B #1B6415 #151B64

tetradic

#64151B #426415 #15645E #361564

square

#64151B #426415 #15645E #361564

split-complementary

#64151B #156436 #154264

monochromatic

#190507 #310A0D #64151B #972029 #C92A36

Accessibility & contrast

On white

12.61

#64151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#64151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64151B

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64151B	#FFFFFF	#000000	##FFFFFF
##64151B	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C281B

Deuteranopia (green-blind)

#403919

Tritanopia (blue-blind)

#6F0018

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #64151b;
/* rgb */ color: rgb(100, 21, 27);
/* oklch */ color: oklch(33.5% 0.111 21.8);

Tailwind

colors: {
  custom: {
    50: '#965a57',
    500: '#64151b',
    950: '#000000',
  },
}

SCSS

$custom: #64151b;
$custom-light: #965a57;
$custom-dark: #000000;

JSON

{
  "hex": "#64151b",
  "rgb": {
    "r": 100,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 355.443,
    "s": 65.289,
    "l": 23.725
  },
  "oklch": {
    "l": 0.33523,
    "c": 0.11133,
    "h": 21.8
  },
  "luminance": 0.03325
}

Semantic roles & 50–950 ramp

primary

#64151B

secondary

#3A9B94

accent

#E8DB40

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #64151B

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

Preview Lab → · Contrast checker → · Palette generator →