#51390B#51390B

#51390B is a dark, moderate orange. Relative luminance 0.047; OKLCH L 36.3% C 0.068 H 78.9°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#51390B
RGB	rgb(81, 57, 11)
HSL	hsl(39, 76%, 18%)
HSV	hsv(39, 86%, 32%)
CMYK	cmyk(0%, 29.6%, 86.4%, 68.2%)
CIE-LAB	lab(25.86, 5.86, 30.79)
CIE-LCH	lch(25.86, 31.34, 79.22°)
OKLab	oklab(36.3% 0.0131 0.0669)
OKLCH	oklch(36.3% 0.068 78.9)
XYZ	xyz(4.9172, 4.7001, 0.9648)
Luminance	0.0470 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51390B #0B2351

analogous

#51160B #51390B #46510B

triadic

#51390B #0B5139 #390B51

tetradic

#51390B #0B5116 #0B2351 #510B46

square

#51390B #0B5116 #0B2351 #510B46

split-complementary

#51390B #0B4651 #160B51

monochromatic

#1B1304 #1B1304 #51390B #875F12 #BD851A

Accessibility & contrast

On white

10.82

#51390B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#51390B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51390B

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51390B	#FFFFFF	#000000	##FFFFFF
##51390B	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#423A04

Deuteranopia (green-blind)

#48400D

Tritanopia (blue-blind)

#593230

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #51390b;
/* rgb */ color: rgb(81, 57, 11);
/* oklch */ color: oklch(36.3% 0.068 78.9);

Tailwind

colors: {
  custom: {
    50: '#856f4e',
    500: '#51390b',
    950: '#000000',
  },
}

SCSS

$custom: #51390b;
$custom-light: #856f4e;
$custom-dark: #000000;

JSON

{
  "hex": "#51390b",
  "rgb": {
    "r": 81,
    "g": 57,
    "b": 11
  },
  "hsl": {
    "h": 39.429,
    "s": 76.087,
    "l": 18.039
  },
  "oklch": {
    "l": 0.36304,
    "c": 0.06818,
    "h": 78.9
  },
  "luminance": 0.047
}

Semantic roles & 50–950 ramp

primary

#51390B

secondary

#2B4D8D

accent

#76F335

background

#F8F6F4

surface

#F0ECE7

border

#CBC7C3

text

#0C0702

muted

#7D7A78

Preview Lab

Preview with #51390B

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

Preview Lab → · Contrast checker → · Palette generator →