#B03031#B03031

#B03031 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.7% C 0.165 H 24.9°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX#B03031
RGBrgb(176, 48, 49)
HSLhsl(360, 57%, 44%)
HSVhsv(360, 73%, 69%)
CMYKcmyk(0%, 72.7%, 72.2%, 31%)
CIE-LABlab(40.52, 51.36, 30.36)
CIE-LCHlch(40.52, 59.66, 30.59°)
OKLaboklab(50.71% 0.1494 0.0694)
OKLCHoklch(50.71% 0.165 24.9)
XYZxyz(19.5180, 11.5687, 4.1104)
Luminance0.1157 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B03031 #30B0AF
analogous
#B03071 #B03031 #B06F30
triadic
#B03031 #31B030 #3031B0
tetradic
#B03031 #71B030 #30B0AF #6F30B0
square
#B03031 #71B030 #30B0AF #6F30B0
split-complementary
#B03031 #30B06F #3071B0
monochromatic
#501616 #802324 #B03031 #CF4E4F #DC7E7F

Accessibility & contrast

On white

6.34
#B03031 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.31
#B03031 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03031
6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B03031#FFFFFF#000000##FFFFFF
##B030311.006.343.316.34
#FFFFFF6.341.0021.001.00
#0000003.3121.001.0021.00
##FFFFFF6.341.0021.001.00

Color blindness preview

Protanopia (red-blind)
#554E30
Deuteranopia (green-blind)
#756A2D
Tritanopia (blue-blind)
#C20032
Achromatopsia (no color)
#5F5F5F

Design tokens & code

CSS
--color: #b03031;
/* rgb */ color: rgb(176, 48, 49);
/* oklch */ color: oklch(50.7% 0.165 24.9);
Tailwind
colors: {
  custom: {
    50: '#d07269',
    500: '#b03031',
    950: '#000000',
  },
}
SCSS
$custom: #b03031;
$custom-light: #d07269;
$custom-dark: #000000;
JSON
{
  "hex": "#b03031",
  "rgb": {
    "r": 176,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.531,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50708,
    "c": 0.16474,
    "h": 24.9
  },
  "luminance": 0.11566
}

Semantic roles & 50–950 ramp

primary
#B03031
secondary
#77C5C4
accent
#E0DF47
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150806
muted
#837B7A

Preview Lab

Preview with #B03031

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

Preview Lab → · Contrast checker → · Palette generator →

#B03031 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva