#B3211B#B3211B

#B3211B is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.7% C 0.182 H 28.5°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#B3211B
RGB	rgb(179, 33, 27)
HSL	hsl(2, 74%, 40%)
HSV	hsv(2, 85%, 70%)
CMYK	cmyk(0%, 81.6%, 84.9%, 29.8%)
CIE-LAB	lab(39.16, 56.29, 41.52)
CIE-LCH	lch(39.16, 69.95, 36.41°)
OKLab	oklab(49.73% 0.1601 0.0868)
OKLCH	oklch(49.73% 0.182 28.5)
XYZ	xyz(19.3345, 10.7537, 2.0944)
Luminance	0.1075 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3211B #1BADB3

analogous

#B31B61 #B3211B #B36D1B

triadic

#B3211B #1BB321 #211BB3

tetradic

#B3211B #61B31B #1BADB3 #6D1BB3

square

#B3211B #61B31B #1BADB3 #6D1BB3

split-complementary

#B3211B #1BB36D #1B61B3

monochromatic

#490D0B #7E1713 #B3211B #DF332C #E76661

Accessibility & contrast

On white

6.67

#B3211B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#B3211B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3211B

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3211B	#FFFFFF	#000000	##FFFFFF
##B3211B	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514818

Deuteranopia (green-blind)

#746712

Tritanopia (blue-blind)

#C60022

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b3211b;
/* rgb */ color: rgb(179, 33, 27);
/* oklch */ color: oklch(49.7% 0.182 28.5);

Tailwind

colors: {
  custom: {
    50: '#d46c59',
    500: '#b3211b',
    950: '#000000',
  },
}

SCSS

$custom: #b3211b;
$custom-light: #d46c59;
$custom-dark: #000000;

JSON

{
  "hex": "#b3211b",
  "rgb": {
    "r": 179,
    "g": 33,
    "b": 27
  },
  "hsl": {
    "h": 2.368,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.49726,
    "c": 0.18209,
    "h": 28.5
  },
  "luminance": 0.10751
}

Semantic roles & 50–950 ramp

primary

#B3211B

secondary

#5EC7CC

accent

#E9F037

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B3211B

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

Preview Lab → · Contrast checker → · Palette generator →