#511E1E#511E1E

#511E1E is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.2% C 0.077 H 22.6°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#511E1E
RGB	rgb(81, 30, 30)
HSL	hsl(0, 46%, 22%)
HSV	hsv(0, 63%, 32%)
CMYK	cmyk(0%, 63%, 63%, 68.2%)
CIE-LAB	lab(19.11, 23.92, 12.08)
CIE-LCH	lch(19.11, 26.80, 26.80°)
OKLab	oklab(31.18% 0.071 0.0296)
OKLCH	oklch(31.18% 0.077 22.6)
XYZ	xyz(4.0923, 2.7721, 1.5476)
Luminance	0.0277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511E1E #1E5151

analogous

#511E38 #511E1E #51381E

triadic

#511E1E #1E511E #1E1E51

tetradic

#511E1E #38511E #1E5151 #381E51

square

#511E1E #38511E #1E5151 #381E51

split-complementary

#511E1E #1E5138 #1E3851

monochromatic

#160808 #240D0D #511E1E #7E2F2F #AA3F3F

Accessibility & contrast

On white

13.51

#511E1E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#511E1E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511E1E

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511E1E	#FFFFFF	#000000	##FFFFFF
##511E1E	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A281E

Deuteranopia (green-blind)

#37321D

Tritanopia (blue-blind)

#59151E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511e1e;
/* rgb */ color: rgb(81, 30, 30);
/* oklch */ color: oklch(31.2% 0.077 22.6);

Tailwind

colors: {
  custom: {
    50: '#865c59',
    500: '#511e1e',
    950: '#000000',
  },
}

SCSS

$custom: #511e1e;
$custom-light: #865c59;
$custom-dark: #000000;

JSON

{
  "hex": "#511e1e",
  "rgb": {
    "r": 81,
    "g": 30,
    "b": 30
  },
  "hsl": {
    "h": 0,
    "s": 45.946,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31184,
    "c": 0.07691,
    "h": 22.6
  },
  "luminance": 0.02772
}

Semantic roles & 50–950 ramp

primary

#511E1E

secondary

#458686

accent

#D6D652

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511E1E

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

Preview Lab → · Contrast checker → · Palette generator →