#B42C1B#B42C1B

#B42C1B is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.8% C 0.175 H 30.8°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#B42C1B
RGB	rgb(180, 44, 27)
HSL	hsl(7, 74%, 41%)
HSV	hsv(7, 85%, 71%)
CMYK	cmyk(0%, 75.6%, 85%, 29.4%)
CIE-LAB	lab(40.55, 53.26, 42.83)
CIE-LCH	lch(40.55, 68.34, 38.81°)
OKLab	oklab(50.8% 0.1505 0.0897)
OKLCH	oklch(50.8% 0.175 30.8)
XYZ	xyz(19.9233, 11.5870, 2.2242)
Luminance	0.1158 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42C1B #1BA3B4

analogous

#B41B56 #B42C1B #B4791B

triadic

#B42C1B #1BB42C #2C1BB4

tetradic

#B42C1B #56B41B #1BA3B4 #791BB4

square

#B42C1B #56B41B #1BA3B4 #791BB4

split-complementary

#B42C1B #1BB479 #1B56B4

monochromatic

#4A120B #7F1F13 #B42C1B #DF412D #E77162

Accessibility & contrast

On white

6.33

#B42C1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#B42C1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42C1B

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42C1B	#FFFFFF	#000000	##FFFFFF
##B42C1B	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C17

Deuteranopia (green-blind)

#786A13

Tritanopia (blue-blind)

#C7002A

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b42c1b;
/* rgb */ color: rgb(180, 44, 27);
/* oklch */ color: oklch(50.8% 0.175 30.8);

Tailwind

colors: {
  custom: {
    50: '#d4705a',
    500: '#b42c1b',
    950: '#000000',
  },
}

SCSS

$custom: #b42c1b;
$custom-light: #d4705a;
$custom-dark: #000000;

JSON

{
  "hex": "#b42c1b",
  "rgb": {
    "r": 180,
    "g": 44,
    "b": 27
  },
  "hsl": {
    "h": 6.667,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.50796,
    "c": 0.17518,
    "h": 30.8
  },
  "luminance": 0.11584
}

Semantic roles & 50–950 ramp

primary

#B42C1B

secondary

#5FC0CC

accent

#DCF137

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B42C1B

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

Preview Lab → · Contrast checker → · Palette generator →