#781B1B#781B1B

#781B1B is a dark, vivid red. Relative luminance 0.049; OKLCH L 38.0% C 0.128 H 25.7°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#781B1B
RGB	rgb(120, 27, 27)
HSL	hsl(0, 63%, 29%)
HSV	hsv(0, 78%, 47%)
CMYK	cmyk(0%, 77.5%, 77.5%, 52.9%)
CIE-LAB	lab(26.32, 39.72, 24.66)
CIE-LCH	lch(26.32, 46.75, 31.83°)
OKLab	oklab(38.02% 0.115 0.0554)
OKLCH	oklch(38.02% 0.128 25.7)
XYZ	xyz(8.3365, 4.8574, 1.5353)
Luminance	0.0486 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#781B1B #1B7878

analogous

#781B4A #781B1B #784A1B

triadic

#781B1B #1B781B #1B1B78

tetradic

#781B1B #4A781B #1B7878 #4A1B78

square

#781B1B #4A781B #1B7878 #4A1B78

split-complementary

#781B1B #1B784A #1B4A78

monochromatic

#190606 #461010 #781B1B #AA2626 #D33B3B

Accessibility & contrast

On white

10.65

#781B1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#781B1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #781B1B

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##781B1B	#FFFFFF	#000000	##FFFFFF
##781B1B	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#37311A

Deuteranopia (green-blind)

#4E4618

Tritanopia (blue-blind)

#85001C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #781b1b;
/* rgb */ color: rgb(120, 27, 27);
/* oklch */ color: oklch(38.0% 0.128 25.7);

Tailwind

colors: {
  custom: {
    50: '#a66057',
    500: '#781b1b',
    950: '#000000',
  },
}

SCSS

$custom: #781b1b;
$custom-light: #a66057;
$custom-dark: #000000;

JSON

{
  "hex": "#781b1b",
  "rgb": {
    "r": 120,
    "g": 27,
    "b": 27
  },
  "hsl": {
    "h": 0,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.3802,
    "c": 0.12762,
    "h": 25.7
  },
  "luminance": 0.04856
}

Semantic roles & 50–950 ramp

primary

#781B1B

secondary

#43ACAC

accent

#E6E641

background

#FBF5F5

surface

#F6EAE9

border

#D0C6C5

text

#110503

muted

#807978

Preview Lab

Preview with #781B1B

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

Preview Lab → · Contrast checker → · Palette generator →