#B43311#B43311

#B43311 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.171 H 34.7°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#B43311
RGB	rgb(180, 51, 17)
HSL	hsl(13, 83%, 39%)
HSV	hsv(13, 91%, 71%)
CMYK	cmyk(0%, 71.7%, 90.6%, 29.4%)
CIE-LAB	lab(41.40, 50.54, 47.92)
CIE-LCH	lch(41.40, 69.64, 43.48°)
OKLab	oklab(51.41% 0.1406 0.0972)
OKLCH	oklch(51.41% 0.171 34.7)
XYZ	xyz(20.1099, 12.1146, 1.8097)
Luminance	0.1211 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43311 #1192B4

analogous

#B41141 #B43311 #B48411

triadic

#B43311 #11B433 #3311B4

tetradic

#B43311 #41B411 #1192B4 #8411B4

square

#B43311 #41B411 #1192B4 #8411B4

split-complementary

#B43311 #11B484 #1141B4

monochromatic

#441306 #7C230C #B43311 #E94419 #EF7251

Accessibility & contrast

On white

6.14

#B43311 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B43311 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43311

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43311	#FFFFFF	#000000	##FFFFFF
##B43311	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A4F08

Deuteranopia (green-blind)

#7A6C05

Tritanopia (blue-blind)

#C7002D

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b43311;
/* rgb */ color: rgb(180, 51, 17);
/* oklch */ color: oklch(51.4% 0.171 34.7);

Tailwind

colors: {
  custom: {
    50: '#d47355',
    500: '#b43311',
    950: '#000000',
  },
}

SCSS

$custom: #b43311;
$custom-light: #d47355;
$custom-dark: #000000;

JSON

{
  "hex": "#b43311",
  "rgb": {
    "r": 180,
    "g": 51,
    "b": 17
  },
  "hsl": {
    "h": 12.515,
    "s": 82.741,
    "l": 38.627
  },
  "oklch": {
    "l": 0.51408,
    "c": 0.17089,
    "h": 34.7
  },
  "luminance": 0.12111
}

Semantic roles & 50–950 ramp

primary

#B43311

secondary

#50B6D0

accent

#CFF92F

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160903

muted

#847B78

Preview Lab

Preview with #B43311

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

Preview Lab → · Contrast checker → · Palette generator →