#B4391F#B4391F

#B4391F is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.2% C 0.164 H 33.6°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#B4391F
RGB	rgb(180, 57, 31)
HSL	hsl(10, 71%, 41%)
HSV	hsv(10, 83%, 71%)
CMYK	cmyk(0%, 68.3%, 82.8%, 29.4%)
CIE-LAB	lab(42.36, 48.49, 42.49)
CIE-LCH	lch(42.36, 64.47, 41.23°)
OKLab	oklab(52.15% 0.1364 0.0905)
OKLCH	oklch(52.15% 0.164 33.6)
XYZ	xyz(20.5352, 12.7316, 2.6722)
Luminance	0.1273 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4391F #1F9AB4

analogous

#B41F50 #B4391F #B4841F

triadic

#B4391F #1FB439 #391FB4

tetradic

#B4391F #50B41F #1F9AB4 #841FB4

square

#B4391F #50B41F #1F9AB4 #841FB4

split-complementary

#B4391F #1FB484 #1F50B4

monochromatic

#4C180D #802816 #B4391F #DC5134 #E57E68

Accessibility & contrast

On white

5.92

#B4391F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B4391F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4391F

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4391F	#FFFFFF	#000000	##FFFFFF
##B4391F	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D531B

Deuteranopia (green-blind)

#7B6E19

Tritanopia (blue-blind)

#C60E34

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b4391f;
/* rgb */ color: rgb(180, 57, 31);
/* oklch */ color: oklch(52.2% 0.164 33.6);

Tailwind

colors: {
  custom: {
    50: '#d3765d',
    500: '#b4391f',
    950: '#000000',
  },
}

SCSS

$custom: #b4391f;
$custom-light: #d3765d;
$custom-dark: #000000;

JSON

{
  "hex": "#b4391f",
  "rgb": {
    "r": 180,
    "g": 57,
    "b": 31
  },
  "hsl": {
    "h": 10.47,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.52155,
    "c": 0.16368,
    "h": 33.6
  },
  "luminance": 0.12728
}

Semantic roles & 50–950 ramp

primary

#B4391F

secondary

#64B9CB

accent

#CEED3A

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B4391F

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

Preview Lab → · Contrast checker → · Palette generator →