#511B16#511B16

#511B16 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.5% C 0.082 H 28.2°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#511B16
RGB	rgb(81, 27, 22)
HSL	hsl(5, 57%, 20%)
HSV	hsv(5, 73%, 32%)
CMYK	cmyk(0%, 66.7%, 72.8%, 68.2%)
CIE-LAB	lab(18.33, 24.94, 16.59)
CIE-LCH	lch(18.33, 29.95, 33.63°)
OKLab	oklab(30.55% 0.0725 0.0388)
OKLCH	oklch(30.55% 0.082 28.2)
XYZ	xyz(3.9305, 2.5917, 1.0522)
Luminance	0.0259 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B16 #164C51

analogous

#51162E #511B16 #513916

triadic

#511B16 #16511B #1B1651

tetradic

#511B16 #2E5116 #164C51 #391651

square

#511B16 #2E5116 #164C51 #391651

split-complementary

#511B16 #165139 #162E51

monochromatic

#180807 #210B09 #511B16 #812B23 #B13B30

Accessibility & contrast

On white

13.83

#511B16 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#511B16 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B16

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B16	#FFFFFF	#000000	##FFFFFF
##511B16	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#292515

Deuteranopia (green-blind)

#373115

Tritanopia (blue-blind)

#590F1A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b16;
/* rgb */ color: rgb(81, 27, 22);
/* oklch */ color: oklch(30.5% 0.082 28.2);

Tailwind

colors: {
  custom: {
    50: '#875a53',
    500: '#511b16',
    950: '#000000',
  },
}

SCSS

$custom: #511b16;
$custom-light: #875a53;
$custom-dark: #000000;

JSON

{
  "hex": "#511b16",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 22
  },
  "hsl": {
    "h": 5.085,
    "s": 57.282,
    "l": 20.196
  },
  "oklch": {
    "l": 0.30546,
    "c": 0.08227,
    "h": 28.2
  },
  "luminance": 0.02591
}

Semantic roles & 50–950 ramp

primary

#511B16

secondary

#3A8288

accent

#D4E147

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511B16

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

Preview Lab → · Contrast checker → · Palette generator →