#51370D#51370D

#51370D is a dark, moderate orange. Relative luminance 0.045; OKLCH L 35.9% C 0.067 H 74.9°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX#51370D
RGBrgb(81, 55, 13)
HSLhsl(37, 72%, 18%)
HSVhsv(37, 84%, 32%)
CMYKcmyk(0%, 32.1%, 84%, 68.2%)
CIE-LABlab(25.29, 7.24, 29.36)
CIE-LCHlch(25.29, 30.24, 76.15°)
OKLaboklab(35.86% 0.0174 0.0644)
OKLCHoklch(35.86% 0.067 74.9)
XYZxyz(4.8325, 4.5112, 0.9969)
Luminance0.0451 (WCAG relative)
Temperaturewarm
Familyorange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51370D #0D2751
analogous
#51150D #51370D #49510D
triadic
#51370D #0D5137 #370D51
tetradic
#51370D #0D5115 #0D2751 #510D49
square
#51370D #0D5115 #0D2751 #510D49
split-complementary
#51370D #0D4951 #150D51
monochromatic
#1A1204 #1C1305 #51370D #865B15 #BA7F1E

Accessibility & contrast

On white

11.04
#51370D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.90
#51370D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51370D
11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51370D#FFFFFF#000000##FFFFFF
##51370D1.0011.041.9011.04
#FFFFFF11.041.0021.001.00
#0000001.9021.001.0021.00
##FFFFFF11.041.0021.001.00

Color blindness preview

Protanopia (red-blind)
#403807
Deuteranopia (green-blind)
#473E0E
Tritanopia (blue-blind)
#59302F
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #51370d;
/* rgb */ color: rgb(81, 55, 13);
/* oklch */ color: oklch(35.9% 0.067 74.9);
Tailwind
colors: {
  custom: {
    50: '#856d4f',
    500: '#51370d',
    950: '#000000',
  },
}
SCSS
$custom: #51370d;
$custom-light: #856d4f;
$custom-dark: #000000;
JSON
{
  "hex": "#51370d",
  "rgb": {
    "r": 81,
    "g": 55,
    "b": 13
  },
  "hsl": {
    "h": 37.059,
    "s": 72.34,
    "l": 18.431
  },
  "oklch": {
    "l": 0.35864,
    "c": 0.06666,
    "h": 74.9
  },
  "luminance": 0.04511
}

Semantic roles & 50–950 ramp

primary
#51370D
secondary
#2E528C
accent
#7EEF39
background
#F8F6F4
surface
#F0EBE7
border
#CBC6C3
text
#0C0702
muted
#7D7A78

Preview Lab

Preview with #51370D

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

Preview Lab → · Contrast checker → · Palette generator →

#51370D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva