#4A100B#4A100B

#4A100B is a dark, moderate red. Relative luminance 0.019; OKLCH L 27.5% C 0.088 H 29.0°. Best body text is #FFFFFF at 15.33:1 contrast (WCAG AA passes).

Color values

HEX	#4A100B
RGB	rgb(74, 16, 11)
HSL	hsl(5, 74%, 17%)
HSV	hsv(5, 85%, 29%)
CMYK	cmyk(0%, 78.4%, 85.1%, 71%)
CIE-LAB	lab(14.69, 26.97, 17.99)
CIE-LCH	lch(14.69, 32.42, 33.71°)
OKLab	oklab(27.49% 0.0773 0.0428)
OKLCH	oklch(27.49% 0.088 29)
XYZ	xyz(3.0701, 1.8511, 0.5122)
Luminance	0.0185 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4A100B #0B454A

analogous

#4A0B26 #4A100B #4A300B

triadic

#4A100B #0B4A10 #100B4A

tetradic

#4A100B #264A0B #0B454A #300B4A

square

#4A100B #264A0B #0B454A #300B4A

split-complementary

#4A100B #0B4A30 #0B264A

monochromatic

#1B0604 #1B0604 #4A100B #7F1C13 #B5271B

Accessibility & contrast

On white

15.33

#4A100B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#4A100B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4A100B

15.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4A100B	#FFFFFF	#000000	##FFFFFF
##4A100B	1.00	15.33	1.37	15.33
#FFFFFF	15.33	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#211D0A

Deuteranopia (green-blind)

#2F2A09

Tritanopia (blue-blind)

#52000F

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #4a100b;
/* rgb */ color: rgb(74, 16, 11);
/* oklch */ color: oklch(27.5% 0.088 29.0);

Tailwind

colors: {
  custom: {
    50: '#82534b',
    500: '#4a100b',
    950: '#000000',
  },
}

SCSS

$custom: #4a100b;
$custom-light: #82534b;
$custom-dark: #000000;

JSON

{
  "hex": "#4a100b",
  "rgb": {
    "r": 74,
    "g": 16,
    "b": 11
  },
  "hsl": {
    "h": 4.762,
    "s": 74.118,
    "l": 16.667
  },
  "oklch": {
    "l": 0.27488,
    "c": 0.08834,
    "h": 29
  },
  "luminance": 0.01851
}

Semantic roles & 50–950 ramp

primary

#4A100B

secondary

#2B7F86

accent

#E2F137

background

#F8F4F4

surface

#F0E7E7

border

#CBC3C3

text

#0B0201

muted

#7C7877

Preview Lab

Preview with #4A100B

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

Preview Lab → · Contrast checker → · Palette generator →