#B03E31#B03E31

#B03E31 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.3% C 0.151 H 29.6°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#B03E31
RGB	rgb(176, 62, 49)
HSL	hsl(6, 56%, 44%)
HSV	hsv(6, 72%, 69%)
CMYK	cmyk(0%, 64.8%, 72.2%, 31%)
CIE-LAB	lab(42.61, 45.66, 32.78)
CIE-LCH	lch(42.61, 56.21, 35.67°)
OKLab	oklab(52.27% 0.1315 0.0746)
OKLCH	oklch(52.27% 0.151 29.6)
XYZ	xyz(20.1836, 12.9000, 4.3323)
Luminance	0.1290 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03E31 #31A3B0

analogous

#B03164 #B03E31 #B07E31

triadic

#B03E31 #31B03E #3E31B0

tetradic

#B03E31 #64B031 #31A3B0 #7E31B0

square

#B03E31 #64B031 #31A3B0 #7E31B0

split-complementary

#B03E31 #31B07E #3164B0

monochromatic

#501C16 #802D24 #B03E31 #CE5D50 #DC8980

Accessibility & contrast

On white

5.87

#B03E31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B03E31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03E31

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03E31	#FFFFFF	#000000	##FFFFFF
##B03E31	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D552F

Deuteranopia (green-blind)

#7A6E2D

Tritanopia (blue-blind)

#C1213C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b03e31;
/* rgb */ color: rgb(176, 62, 49);
/* oklch */ color: oklch(52.3% 0.151 29.6);

Tailwind

colors: {
  custom: {
    50: '#cf796a',
    500: '#b03e31',
    950: '#000000',
  },
}

SCSS

$custom: #b03e31;
$custom-light: #cf796a;
$custom-dark: #000000;

JSON

{
  "hex": "#b03e31",
  "rgb": {
    "r": 176,
    "g": 62,
    "b": 49
  },
  "hsl": {
    "h": 6.142,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.52273,
    "c": 0.15121,
    "h": 29.6
  },
  "luminance": 0.12897
}

Semantic roles & 50–950 ramp

primary

#B03E31

secondary

#78BDC5

accent

#D0E048

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B03E31

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

Preview Lab → · Contrast checker → · Palette generator →