#B0281B#B0281B

#B0281B is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.7% C 0.174 H 29.9°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#B0281B
RGB	rgb(176, 40, 27)
HSL	hsl(5, 73%, 40%)
HSV	hsv(5, 85%, 69%)
CMYK	cmyk(0%, 77.3%, 84.7%, 31%)
CIE-LAB	lab(39.29, 53.32, 41.41)
CIE-LCH	lch(39.29, 67.51, 37.83°)
OKLab	oklab(49.72% 0.1511 0.0869)
OKLCH	oklch(49.72% 0.174 29.9)
XYZ	xyz(18.8634, 10.8299, 2.1338)
Luminance	0.1083 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B0281B #1BA3B0

analogous

#B01B58 #B0281B #B0731B

triadic

#B0281B #1BB028 #281BB0

tetradic

#B0281B #58B01B #1BA3B0 #731BB0

square

#B0281B #58B01B #1BA3B0 #731BB0

split-complementary

#B0281B #1BB073 #1B58B0

monochromatic

#46100B #7B1C13 #B0281B #DE3A2A #E66B5F

Accessibility & contrast

On white

6.63

#B0281B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#B0281B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B0281B

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B0281B	#FFFFFF	#000000	##FFFFFF
##B0281B	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534917

Deuteranopia (green-blind)

#746713

Tritanopia (blue-blind)

#C20027

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b0281b;
/* rgb */ color: rgb(176, 40, 27);
/* oklch */ color: oklch(49.7% 0.174 29.9);

Tailwind

colors: {
  custom: {
    50: '#d16e5a',
    500: '#b0281b',
    950: '#000000',
  },
}

SCSS

$custom: #b0281b;
$custom-light: #d16e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#b0281b",
  "rgb": {
    "r": 176,
    "g": 40,
    "b": 27
  },
  "hsl": {
    "h": 5.235,
    "s": 73.399,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49716,
    "c": 0.17432,
    "h": 29.9
  },
  "luminance": 0.10827
}

Semantic roles & 50–950 ramp

primary

#B0281B

secondary

#5CC1CB

accent

#E0F038

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B0281B

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

Preview Lab → · Contrast checker → · Palette generator →