#B03128#B03128

#B03128 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.7% C 0.165 H 28.5°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX#B03128
RGBrgb(176, 49, 40)
HSLhsl(4, 63%, 42%)
HSVhsv(4, 77%, 69%)
CMYKcmyk(0%, 72.2%, 77.3%, 31%)
CIE-LABlab(40.55, 50.60, 35.63)
CIE-LCHlch(40.55, 61.89, 35.15°)
OKLaboklab(50.69% 0.1451 0.0787)
OKLCHoklch(50.69% 0.165 28.5)
XYZxyz(19.3881, 11.5829, 3.2219)
Luminance0.1158 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B03128 #28A7B0
analogous
#B02863 #B03128 #B07528
triadic
#B03128 #28B031 #3128B0
tetradic
#B03128 #63B028 #28A7B0 #7528B0
square
#B03128 #63B028 #28A7B0 #7528B0
split-complementary
#B03128 #28B075 #2863B0
monochromatic
#4C1511 #7E231D #B03128 #D44B41 #DF7A73

Accessibility & contrast

On white

6.33
#B03128 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.32
#B03128 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03128
6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B03128#FFFFFF#000000##FFFFFF
##B031281.006.333.326.33
#FFFFFF6.331.0021.001.00
#0000003.3221.001.0021.00
##FFFFFF6.331.0021.001.00

Color blindness preview

Protanopia (red-blind)
#564E26
Deuteranopia (green-blind)
#766A23
Tritanopia (blue-blind)
#C20030
Achromatopsia (no color)
#606060

Design tokens & code

CSS
--color: #b03128;
/* rgb */ color: rgb(176, 49, 40);
/* oklch */ color: oklch(50.7% 0.165 28.5);
Tailwind
colors: {
  custom: {
    50: '#d07263',
    500: '#b03128',
    950: '#000000',
  },
}
SCSS
$custom: #b03128;
$custom-light: #d07263;
$custom-dark: #000000;
JSON
{
  "hex": "#b03128",
  "rgb": {
    "r": 176,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 3.971,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.5069,
    "c": 0.16509,
    "h": 28.5
  },
  "luminance": 0.1158
}

Semantic roles & 50–950 ramp

primary
#B03128
secondary
#6DC1C6
accent
#DBE642
background
#FEF7F5
surface
#FCEDEA
border
#D5C8C6
text
#160805
muted
#847B79

Preview Lab

Preview with #B03128

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

Preview Lab → · Contrast checker → · Palette generator →

#B03128 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva