#B03B24#B03B24

#B03B24 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.8% C 0.157 H 33.1°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#B03B24
RGB	rgb(176, 59, 36)
HSL	hsl(10, 66%, 42%)
HSV	hsv(10, 80%, 69%)
CMYK	cmyk(0%, 66.5%, 79.5%, 31%)
CIE-LAB	lab(41.98, 46.42, 39.31)
CIE-LCH	lch(41.98, 60.83, 40.26°)
OKLab	oklab(51.75% 0.1313 0.0856)
OKLCH	oklch(51.75% 0.157 33.1)
XYZ	xyz(19.7891, 12.4883, 3.0372)
Luminance	0.1249 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03B24 #2499B0

analogous

#B02453 #B03B24 #B08124

triadic

#B03B24 #24B03B #3B24B0

tetradic

#B03B24 #53B024 #2499B0 #8124B0

square

#B03B24 #53B024 #2499B0 #8124B0

split-complementary

#B03B24 #24B081 #2453B0

monochromatic

#4A190F #7D2A1A #B03B24 #D7543A #E1806D

Accessibility & contrast

On white

6.01

#B03B24 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#B03B24 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03B24

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03B24	#FFFFFF	#000000	##FFFFFF
##B03B24	1.00	6.01	3.50	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5320

Deuteranopia (green-blind)

#7A6D1F

Tritanopia (blue-blind)

#C21837

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b03b24;
/* rgb */ color: rgb(176, 59, 36);
/* oklch */ color: oklch(51.8% 0.157 33.1);

Tailwind

colors: {
  custom: {
    50: '#d07760',
    500: '#b03b24',
    950: '#000000',
  },
}

SCSS

$custom: #b03b24;
$custom-light: #d07760;
$custom-dark: #000000;

JSON

{
  "hex": "#b03b24",
  "rgb": {
    "r": 176,
    "g": 59,
    "b": 36
  },
  "hsl": {
    "h": 9.857,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.51753,
    "c": 0.15671,
    "h": 33.1
  },
  "luminance": 0.12485
}

Semantic roles & 50–950 ramp

primary

#B03B24

secondary

#68B8C8

accent

#CDE93F

background

#FDF7F5

surface

#FBEDEA

border

#D4C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #B03B24

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

Preview Lab → · Contrast checker → · Palette generator →