#4D181B#4D181B

#4D181B is a dark, moderate red. Relative luminance 0.023; OKLCH L 29.5% C 0.080 H 20.2°. Best body text is #FFFFFF at 14.36:1 contrast (WCAG AA passes).

Color values

HEX	#4D181B
RGB	rgb(77, 24, 27)
HSL	hsl(357, 52%, 20%)
HSV	hsv(357, 69%, 30%)
CMYK	cmyk(0%, 68.8%, 64.9%, 69.8%)
CIE-LAB	lab(17.04, 25.27, 11.33)
CIE-LCH	lch(17.04, 27.70, 24.14°)
OKLab	oklab(29.46% 0.0752 0.0277)
OKLCH	oklch(29.46% 0.08 20.2)
XYZ	xyz(3.5854, 2.3107, 1.2939)
Luminance	0.0231 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D181B #184D4A

analogous

#4D1835 #4D181B #4D3018

triadic

#4D181B #1B4D18 #181B4D

tetradic

#4D181B #354D18 #184D4A #30184D

square

#4D181B #354D18 #184D4A #30184D

split-complementary

#4D181B #184D30 #18354D

monochromatic

#170708 #1E090B #4D181B #7C272B #AA353C

Accessibility & contrast

On white

14.36

#4D181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#4D181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4D181B

14.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D181B	#FFFFFF	#000000	##FFFFFF
##4D181B	1.00	14.36	1.46	14.36
#FFFFFF	14.36	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25231B

Deuteranopia (green-blind)

#332E1A

Tritanopia (blue-blind)

#550E19

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #4d181b;
/* rgb */ color: rgb(77, 24, 27);
/* oklch */ color: oklch(29.5% 0.080 20.2);

Tailwind

colors: {
  custom: {
    50: '#835857',
    500: '#4d181b',
    950: '#000000',
  },
}

SCSS

$custom: #4d181b;
$custom-light: #835857;
$custom-dark: #000000;

JSON

{
  "hex": "#4d181b",
  "rgb": {
    "r": 77,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 356.604,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.29459,
    "c": 0.08012,
    "h": 20.2
  },
  "luminance": 0.0231
}

Semantic roles & 50–950 ramp

primary

#4D181B

secondary

#3D8480

accent

#DCD44C

background

#F8F5F5

surface

#EFE9E9

border

#CAC5C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4D181B

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

Preview Lab → · Contrast checker → · Palette generator →