#B03F23#B03F23

#B03F23 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.2% C 0.153 H 35.0°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B03F23
RGB	rgb(176, 63, 35)
HSL	hsl(12, 67%, 41%)
HSV	hsv(12, 80%, 69%)
CMYK	cmyk(0%, 64.2%, 80.1%, 31%)
CIE-LAB	lab(42.63, 44.63, 40.48)
CIE-LCH	lch(42.63, 60.26, 42.21°)
OKLab	oklab(52.24% 0.1256 0.0878)
OKLCH	oklch(52.24% 0.153 35)
XYZ	xyz(19.9876, 12.9094, 3.0291)
Luminance	0.1291 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03F23 #2394B0

analogous

#B0234E #B03F23 #B08623

triadic

#B03F23 #23B03F #3F23B0

tetradic

#B03F23 #4EB023 #2394B0 #8623B0

square

#B03F23 #4EB023 #2394B0 #8623B0

split-complementary

#B03F23 #23B086 #234EB0

monochromatic

#4A1A0F #7D2D19 #B03F23 #D85839 #E2836C

Accessibility & contrast

On white

5.86

#B03F23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B03F23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03F23

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03F23	#FFFFFF	#000000	##FFFFFF
##B03F23	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F551F

Deuteranopia (green-blind)

#7B6E1E

Tritanopia (blue-blind)

#C22039

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b03f23;
/* rgb */ color: rgb(176, 63, 35);
/* oklch */ color: oklch(52.2% 0.153 35.0);

Tailwind

colors: {
  custom: {
    50: '#d07960',
    500: '#b03f23',
    950: '#000000',
  },
}

SCSS

$custom: #b03f23;
$custom-light: #d07960;
$custom-dark: #000000;

JSON

{
  "hex": "#b03f23",
  "rgb": {
    "r": 176,
    "g": 63,
    "b": 35
  },
  "hsl": {
    "h": 11.915,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.52235,
    "c": 0.15321,
    "h": 35
  },
  "luminance": 0.12906
}

Semantic roles & 50–950 ramp

primary

#B03F23

secondary

#67B5C8

accent

#C8EA3E

background

#FDF7F5

surface

#FBEEE9

border

#D4C9C5

text

#150905

muted

#837B79

Preview Lab

Preview with #B03F23

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

Preview Lab → · Contrast checker → · Palette generator →