#B03A23#B03A23

#B03A23 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.6% C 0.158 H 33.0°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX#B03A23
RGBrgb(176, 58, 35)
HSLhsl(10, 67%, 41%)
HSVhsv(10, 80%, 69%)
CMYKcmyk(0%, 67%, 80.1%, 31%)
CIE-LABlab(41.81, 46.82, 39.67)
CIE-LCHlch(41.81, 61.37, 40.28°)
OKLaboklab(51.63% 0.1323 0.086)
OKLCHoklch(51.63% 0.158 33)
XYZxyz(19.7232, 12.3805, 2.9409)
Luminance0.1238 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B03A23 #2399B0
analogous
#B02353 #B03A23 #B08123
triadic
#B03A23 #23B03A #3A23B0
tetradic
#B03A23 #53B023 #2399B0 #8123B0
square
#B03A23 #53B023 #2399B0 #8123B0
split-complementary
#B03A23 #23B081 #2353B0
monochromatic
#4A180F #7D2919 #B03A23 #D85339 #E27F6C

Accessibility & contrast

On white

6.04
#B03A23 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.48
#B03A23 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03A23
6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B03A23#FFFFFF#000000##FFFFFF
##B03A231.006.043.486.04
#FFFFFF6.041.0021.001.00
#0000003.4821.001.0021.00
##FFFFFF6.041.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5C521F
Deuteranopia (green-blind)
#796C1E
Tritanopia (blue-blind)
#C21636
Achromatopsia (no color)
#636363

Design tokens & code

CSS
--color: #b03a23;
/* rgb */ color: rgb(176, 58, 35);
/* oklch */ color: oklch(51.6% 0.158 33.0);
Tailwind
colors: {
  custom: {
    50: '#d07660',
    500: '#b03a23',
    950: '#000000',
  },
}
SCSS
$custom: #b03a23;
$custom-light: #d07660;
$custom-dark: #000000;
JSON
{
  "hex": "#b03a23",
  "rgb": {
    "r": 176,
    "g": 58,
    "b": 35
  },
  "hsl": {
    "h": 9.787,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.51625,
    "c": 0.15782,
    "h": 33
  },
  "luminance": 0.12378
}

Semantic roles & 50–950 ramp

primary
#B03A23
secondary
#67B8C8
accent
#CEEA3E
background
#FEF7F5
surface
#FCEDE9
border
#D5C8C5
text
#160905
muted
#847B79

Preview Lab

Preview with #B03A23

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

Preview Lab → · Contrast checker → · Palette generator →

#B03A23 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva