#B42F1F#B42F1F

#B42F1F is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.1% C 0.172 H 30.6°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#B42F1F
RGB	rgb(180, 47, 31)
HSL	hsl(6, 71%, 41%)
HSV	hsv(6, 83%, 71%)
CMYK	cmyk(0%, 73.9%, 82.8%, 29.4%)
CIE-LAB	lab(40.96, 52.32, 41.18)
CIE-LCH	lch(40.96, 66.59, 38.20°)
OKLab	oklab(51.11% 0.1483 0.0876)
OKLCH	oklch(51.11% 0.172 30.6)
XYZ	xyz(20.0886, 11.8384, 2.5234)
Luminance	0.1183 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42F1F #1FA4B4

analogous

#B41F5A #B42F1F #B47A1F

triadic

#B42F1F #1FB42F #2F1FB4

tetradic

#B42F1F #5AB41F #1FA4B4 #7A1FB4

square

#B42F1F #5AB41F #1FA4B4 #7A1FB4

split-complementary

#B42F1F #1FB47A #1F5AB4

monochromatic

#4C140D #802116 #B42F1F #DC4634 #E57668

Accessibility & contrast

On white

6.24

#B42F1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#B42F1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42F1F

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42F1F	#FFFFFF	#000000	##FFFFFF
##B42F1F	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E1B

Deuteranopia (green-blind)

#786B18

Tritanopia (blue-blind)

#C7002D

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b42f1f;
/* rgb */ color: rgb(180, 47, 31);
/* oklch */ color: oklch(51.1% 0.172 30.6);

Tailwind

colors: {
  custom: {
    50: '#d4715d',
    500: '#b42f1f',
    950: '#000000',
  },
}

SCSS

$custom: #b42f1f;
$custom-light: #d4715d;
$custom-dark: #000000;

JSON

{
  "hex": "#b42f1f",
  "rgb": {
    "r": 180,
    "g": 47,
    "b": 31
  },
  "hsl": {
    "h": 6.443,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.51109,
    "c": 0.17222,
    "h": 30.6
  },
  "luminance": 0.11835
}

Semantic roles & 50–950 ramp

primary

#B42F1F

secondary

#64C0CB

accent

#DAED3A

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B42F1F

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

Preview Lab → · Contrast checker → · Palette generator →