#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
RGB	rgb(81, 55, 13)
HSL	hsl(37, 72%, 18%)
HSV	hsv(37, 84%, 32%)
CMYK	cmyk(0%, 32.1%, 84%, 68.2%)
CIE-LAB	lab(25.29, 7.24, 29.36)
CIE-LCH	lch(25.29, 30.24, 76.15°)
OKLab	oklab(35.86% 0.0174 0.0644)
OKLCH	oklch(35.86% 0.067 74.9)
XYZ	xyz(4.8325, 4.5112, 0.9969)
Luminance	0.0451 (WCAG relative)
Temperature	warm
Family	orange

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
##51370D	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

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 →