#B4351F#B4351F

#B4351F is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.167 H 32.3°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#B4351F
RGB	rgb(180, 53, 31)
HSL	hsl(9, 71%, 41%)
HSV	hsv(9, 83%, 71%)
CMYK	cmyk(0%, 70.6%, 82.8%, 29.4%)
CIE-LAB	lab(41.77, 50.09, 41.94)
CIE-LCH	lch(41.77, 65.33, 39.94°)
OKLab	oklab(51.72% 0.1414 0.0893)
OKLCH	oklch(51.72% 0.167 32.3)
XYZ	xyz(20.3452, 12.3516, 2.6089)
Luminance	0.1235 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4351F #1F9EB4

analogous

#B41F54 #B4351F #B4801F

triadic

#B4351F #1FB435 #351FB4

tetradic

#B4351F #54B41F #1F9EB4 #801FB4

square

#B4351F #54B41F #1F9EB4 #801FB4

split-complementary

#B4351F #1FB480 #1F54B4

monochromatic

#4C160D #802616 #B4351F #DC4D34 #E57B68

Accessibility & contrast

On white

6.05

#B4351F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B4351F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4351F

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4351F	#FFFFFF	#000000	##FFFFFF
##B4351F	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511B

Deuteranopia (green-blind)

#7A6D18

Tritanopia (blue-blind)

#C60031

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b4351f;
/* rgb */ color: rgb(180, 53, 31);
/* oklch */ color: oklch(51.7% 0.167 32.3);

Tailwind

colors: {
  custom: {
    50: '#d4745d',
    500: '#b4351f',
    950: '#000000',
  },
}

SCSS

$custom: #b4351f;
$custom-light: #d4745d;
$custom-dark: #000000;

JSON

{
  "hex": "#b4351f",
  "rgb": {
    "r": 180,
    "g": 53,
    "b": 31
  },
  "hsl": {
    "h": 8.859,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.51716,
    "c": 0.16718,
    "h": 32.3
  },
  "luminance": 0.12348
}

Semantic roles & 50–950 ramp

primary

#B4351F

secondary

#64BBCB

accent

#D3ED3A

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B4351F

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

Preview Lab → · Contrast checker → · Palette generator →