#B4351B#B4351B

#B4351B is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.168 H 33.3°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B4351B
RGB	rgb(180, 53, 27)
HSL	hsl(10, 74%, 41%)
HSV	hsv(10, 85%, 71%)
CMYK	cmyk(0%, 70.6%, 85%, 29.4%)
CIE-LAB	lab(41.74, 49.98, 43.88)
CIE-LCH	lch(41.74, 66.51, 41.28°)
OKLab	oklab(51.68% 0.1403 0.0921)
OKLCH	oklch(51.68% 0.168 33.3)
XYZ	xyz(20.2957, 12.3318, 2.3483)
Luminance	0.1233 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4351B #1B9AB4

analogous

#B41B4D #B4351B #B4811B

triadic

#B4351B #1BB435 #351BB4

tetradic

#B4351B #4DB41B #1B9AB4 #811BB4

square

#B4351B #4DB41B #1B9AB4 #811BB4

split-complementary

#B4351B #1BB481 #1B4DB4

monochromatic

#4A160B #7F2513 #B4351B #DF4B2D #E77962

Accessibility & contrast

On white

6.06

#B4351B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B4351B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4351B

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4351B	#FFFFFF	#000000	##FFFFFF
##B4351B	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5116

Deuteranopia (green-blind)

#7A6D14

Tritanopia (blue-blind)

#C70030

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b4351b;
/* rgb */ color: rgb(180, 53, 27);
/* oklch */ color: oklch(51.7% 0.168 33.3);

Tailwind

colors: {
  custom: {
    50: '#d4745b',
    500: '#b4351b',
    950: '#000000',
  },
}

SCSS

$custom: #b4351b;
$custom-light: #d4745b;
$custom-dark: #000000;

JSON

{
  "hex": "#b4351b",
  "rgb": {
    "r": 180,
    "g": 53,
    "b": 27
  },
  "hsl": {
    "h": 10.196,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.51683,
    "c": 0.16782,
    "h": 33.3
  },
  "luminance": 0.12329
}

Semantic roles & 50–950 ramp

primary

#B4351B

secondary

#5FB9CC

accent

#D1F137

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B4351B

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

Preview Lab → · Contrast checker → · Palette generator →