#AD3F1B#AD3F1B

#AD3F1B is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.7% C 0.152 H 37.5°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX#AD3F1B
RGBrgb(173, 63, 27)
HSLhsl(15, 73%, 39%)
HSVhsv(15, 84%, 68%)
CMYKcmyk(0%, 63.6%, 84.4%, 32.2%)
CIE-LABlab(42.03, 43.29, 43.66)
CIE-LCHlch(42.03, 61.48, 45.24°)
OKLaboklab(51.67% 0.1204 0.0923)
OKLCHoklch(51.67% 0.152 37.5)
XYZxyz(19.2111, 12.5212, 2.4419)
Luminance0.1252 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AD3F1B #1B89AD
analogous
#AD1B40 #AD3F1B #AD881B
triadic
#AD3F1B #1BAD3F #3F1BAD
tetradic
#AD3F1B #40AD1B #1B89AD #881BAD
square
#AD3F1B #40AD1B #1B89AD #881BAD
split-complementary
#AD3F1B #1BAD88 #1B40AD
monochromatic
#43180A #782C13 #AD3F1B #DD5528 #E67E5D

Accessibility & contrast

On white

5.99
#AD3F1B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.50
#AD3F1B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD3F1B
5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AD3F1B#FFFFFF#000000##FFFFFF
##AD3F1B1.005.993.505.99
#FFFFFF5.991.0021.001.00
#0000003.5021.001.0021.00
##FFFFFF5.991.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5F5415
Deuteranopia (green-blind)
#7A6C16
Tritanopia (blue-blind)
#BF2138
Achromatopsia (no color)
#636363

Design tokens & code

CSS
--color: #ad3f1b;
/* rgb */ color: rgb(173, 63, 27);
/* oklch */ color: oklch(51.7% 0.152 37.5);
Tailwind
colors: {
  custom: {
    50: '#ce795b',
    500: '#ad3f1b',
    950: '#000000',
  },
}
SCSS
$custom: #ad3f1b;
$custom-light: #ce795b;
$custom-dark: #000000;
JSON
{
  "hex": "#ad3f1b",
  "rgb": {
    "r": 173,
    "g": 63,
    "b": 27
  },
  "hsl": {
    "h": 14.795,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.51668,
    "c": 0.15169,
    "h": 37.5
  },
  "luminance": 0.12518
}

Semantic roles & 50–950 ramp

primary
#AD3F1B
secondary
#5AAECA
accent
#C2F038
background
#FDF7F5
surface
#FBEEE9
border
#D4C9C5
text
#150904
muted
#837B79

Preview Lab

Preview with #AD3F1B

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

Preview Lab → · Contrast checker → · Palette generator →

#AD3F1B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva