#B42F1B#B42F1B

#B42F1B is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.1% C 0.173 H 31.6°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#B42F1B
RGB	rgb(180, 47, 27)
HSL	hsl(8, 74%, 41%)
HSV	hsv(8, 85%, 71%)
CMYK	cmyk(0%, 73.9%, 85%, 29.4%)
CIE-LAB	lab(40.93, 52.22, 43.16)
CIE-LCH	lch(40.93, 67.75, 39.58°)
OKLab	oklab(51.08% 0.1473 0.0904)
OKLCH	oklch(51.08% 0.173 31.6)
XYZ	xyz(20.0392, 11.8186, 2.2628)
Luminance	0.1182 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42F1B #1BA0B4

analogous

#B41B53 #B42F1B #B47B1B

triadic

#B42F1B #1BB42F #2F1BB4

tetradic

#B42F1B #53B41B #1BA0B4 #7B1BB4

square

#B42F1B #53B41B #1BA0B4 #7B1BB4

split-complementary

#B42F1B #1BB47B #1B53B4

monochromatic

#4A130B #7F2113 #B42F1B #DF442D #E77362

Accessibility & contrast

On white

6.24

#B42F1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B42F1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42F1B

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42F1B	#FFFFFF	#000000	##FFFFFF
##B42F1B	1.00	6.24	3.36	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E17

Deuteranopia (green-blind)

#796B13

Tritanopia (blue-blind)

#C7002C

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b42f1b;
/* rgb */ color: rgb(180, 47, 27);
/* oklch */ color: oklch(51.1% 0.173 31.6);

Tailwind

colors: {
  custom: {
    50: '#d4715a',
    500: '#b42f1b',
    950: '#000000',
  },
}

SCSS

$custom: #b42f1b;
$custom-light: #d4715a;
$custom-dark: #000000;

JSON

{
  "hex": "#b42f1b",
  "rgb": {
    "r": 180,
    "g": 47,
    "b": 27
  },
  "hsl": {
    "h": 7.843,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.51075,
    "c": 0.17281,
    "h": 31.6
  },
  "luminance": 0.11815
}

Semantic roles & 50–950 ramp

primary

#B42F1B

secondary

#5FBECC

accent

#D8F137

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B42F1B

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

Preview Lab → · Contrast checker → · Palette generator →