#B03B2B#B03B2B

#B03B2B is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.8% C 0.155 H 30.7°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#B03B2B
RGB	rgb(176, 59, 43)
HSL	hsl(7, 61%, 43%)
HSV	hsv(7, 76%, 69%)
CMYK	cmyk(0%, 66.5%, 75.6%, 31%)
CIE-LAB	lab(42.05, 46.70, 35.57)
CIE-LCH	lch(42.05, 58.70, 37.30°)
OKLab	oklab(51.83% 0.1335 0.0794)
OKLCH	oklch(51.83% 0.155 30.7)
XYZ	xyz(19.9067, 12.5353, 3.6564)
Luminance	0.1253 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03B2B #2BA0B0

analogous

#B02B5D #B03B2B #B07D2B

triadic

#B03B2B #2BB03B #3B2BB0

tetradic

#B03B2B #5DB02B #2BA0B0 #7D2BB0

square

#B03B2B #5DB02B #2BA0B0 #7D2BB0

split-complementary

#B03B2B #2BB07D #2B5DB0

monochromatic

#4E1A13 #7F2B1F #B03B2B #D25746 #DE8478

Accessibility & contrast

On white

5.99

#B03B2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B03B2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03B2B

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03B2B	#FFFFFF	#000000	##FFFFFF
##B03B2B	1.00	5.99	3.51	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5328

Deuteranopia (green-blind)

#796D27

Tritanopia (blue-blind)

#C21A38

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b03b2b;
/* rgb */ color: rgb(176, 59, 43);
/* oklch */ color: oklch(51.8% 0.155 30.7);

Tailwind

colors: {
  custom: {
    50: '#d07765',
    500: '#b03b2b',
    950: '#000000',
  },
}

SCSS

$custom: #b03b2b;
$custom-light: #d07765;
$custom-dark: #000000;

JSON

{
  "hex": "#b03b2b",
  "rgb": {
    "r": 176,
    "g": 59,
    "b": 43
  },
  "hsl": {
    "h": 7.218,
    "s": 60.731,
    "l": 42.941
  },
  "oklch": {
    "l": 0.51831,
    "c": 0.15532,
    "h": 30.7
  },
  "luminance": 0.12532
}

Semantic roles & 50–950 ramp

primary

#B03B2B

secondary

#71BCC6

accent

#D1E444

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B03B2B

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

Preview Lab → · Contrast checker → · Palette generator →