#B42B1C#B42B1C

#B42B1C is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.7% C 0.176 H 30.3°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#B42B1C
RGB	rgb(180, 43, 28)
HSL	hsl(6, 73%, 41%)
HSV	hsv(6, 84%, 71%)
CMYK	cmyk(0%, 76.1%, 84.4%, 29.4%)
CIE-LAB	lab(40.44, 53.62, 42.23)
CIE-LCH	lch(40.44, 68.25, 38.23°)
OKLab	oklab(50.71% 0.1518 0.0887)
OKLCH	oklch(50.71% 0.176 30.3)
XYZ	xyz(19.8983, 11.5181, 2.2739)
Luminance	0.1152 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42B1C #1CA5B4

analogous

#B41C59 #B42B1C #B4771C

triadic

#B42B1C #1CB42B #2B1CB4

tetradic

#B42B1C #59B41C #1CA5B4 #771CB4

square

#B42B1C #59B41C #1CA5B4 #771CB4

split-complementary

#B42B1C #1CB477 #1C59B4

monochromatic

#4A120C #7F1E14 #B42B1C #DF402F #E77164

Accessibility & contrast

On white

6.36

#B42B1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#B42B1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42B1C

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42B1C	#FFFFFF	#000000	##FFFFFF
##B42B1C	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C18

Deuteranopia (green-blind)

#776A14

Tritanopia (blue-blind)

#C70029

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #b42b1c;
/* rgb */ color: rgb(180, 43, 28);
/* oklch */ color: oklch(50.7% 0.176 30.3);

Tailwind

colors: {
  custom: {
    50: '#d4705b',
    500: '#b42b1c',
    950: '#000000',
  },
}

SCSS

$custom: #b42b1c;
$custom-light: #d4705b;
$custom-dark: #000000;

JSON

{
  "hex": "#b42b1c",
  "rgb": {
    "r": 180,
    "g": 43,
    "b": 28
  },
  "hsl": {
    "h": 5.921,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.50714,
    "c": 0.17582,
    "h": 30.3
  },
  "luminance": 0.11515
}

Semantic roles & 50–950 ramp

primary

#B42B1C

secondary

#60C1CC

accent

#DEF038

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B42B1C

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

Preview Lab → · Contrast checker → · Palette generator →