#B42F17#B42F17

#B42F17 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.0% C 0.173 H 32.4°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#B42F17
RGB	rgb(180, 47, 23)
HSL	hsl(9, 77%, 40%)
HSV	hsv(9, 87%, 71%)
CMYK	cmyk(0%, 73.9%, 87.2%, 29.4%)
CIE-LAB	lab(40.90, 52.12, 45.02)
CIE-LCH	lch(40.90, 68.87, 40.82°)
OKLab	oklab(51.05% 0.1463 0.093)
OKLCH	oklch(51.05% 0.173 32.4)
XYZ	xyz(19.9960, 11.8014, 2.0355)
Luminance	0.1180 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42F17 #179CB4

analogous

#B4174E #B42F17 #B47E17

triadic

#B42F17 #17B42F #2F17B4

tetradic

#B42F17 #4EB417 #179CB4 #7E17B4

square

#B42F17 #4EB417 #179CB4 #7E17B4

split-complementary

#B42F17 #17B47E #174EB4

monochromatic

#471309 #7E2110 #B42F17 #E34225 #EA715B

Accessibility & contrast

On white

6.25

#B42F17 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B42F17 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42F17

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42F17	#FFFFFF	#000000	##FFFFFF
##B42F17	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E12

Deuteranopia (green-blind)

#796B0D

Tritanopia (blue-blind)

#C7002B

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b42f17;
/* rgb */ color: rgb(180, 47, 23);
/* oklch */ color: oklch(51.0% 0.173 32.4);

Tailwind

colors: {
  custom: {
    50: '#d47158',
    500: '#b42f17',
    950: '#000000',
  },
}

SCSS

$custom: #b42f17;
$custom-light: #d47158;
$custom-dark: #000000;

JSON

{
  "hex": "#b42f17",
  "rgb": {
    "r": 180,
    "g": 47,
    "b": 23
  },
  "hsl": {
    "h": 9.172,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.51046,
    "c": 0.17336,
    "h": 32.4
  },
  "luminance": 0.11798
}

Semantic roles & 50–950 ramp

primary

#B42F17

secondary

#59BCCE

accent

#D7F434

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160803

muted

#847B78

Preview Lab

Preview with #B42F17

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

Preview Lab → · Contrast checker → · Palette generator →