#511E1F#511E1F

#511E1F is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.2% C 0.077 H 21.4°. Best body text is #FFFFFF at 13.50:1 contrast (WCAG AA passes).

Color values

HEX	#511E1F
RGB	rgb(81, 30, 31)
HSL	hsl(359, 46%, 22%)
HSV	hsv(359, 63%, 32%)
CMYK	cmyk(0%, 63%, 61.7%, 68.2%)
CIE-LAB	lab(19.13, 24.01, 11.42)
CIE-LCH	lch(19.13, 26.59, 25.43°)
OKLab	oklab(31.21% 0.0715 0.0281)
OKLCH	oklch(31.21% 0.077 21.4)
XYZ	xyz(4.1053, 2.7773, 1.6159)
Luminance	0.0278 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511E1F #1E5150

analogous

#511E39 #511E1F #51371E

triadic

#511E1F #1F511E #1E1F51

tetradic

#511E1F #39511E #1E5150 #371E51

square

#511E1F #39511E #1E5150 #371E51

split-complementary

#511E1F #1E5137 #1E3951

monochromatic

#160809 #240D0E #511E1F #7E2F30 #AA3F41

Accessibility & contrast

On white

13.50

#511E1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#511E1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511E1F

13.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511E1F	#FFFFFF	#000000	##FFFFFF
##511E1F	1.00	13.50	1.56	13.50
#FFFFFF	13.50	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A281F

Deuteranopia (green-blind)

#37321E

Tritanopia (blue-blind)

#59151F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511e1f;
/* rgb */ color: rgb(81, 30, 31);
/* oklch */ color: oklch(31.2% 0.077 21.4);

Tailwind

colors: {
  custom: {
    50: '#865c5a',
    500: '#511e1f',
    950: '#000000',
  },
}

SCSS

$custom: #511e1f;
$custom-light: #865c5a;
$custom-dark: #000000;

JSON

{
  "hex": "#511e1f",
  "rgb": {
    "r": 81,
    "g": 30,
    "b": 31
  },
  "hsl": {
    "h": 358.824,
    "s": 45.946,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31207,
    "c": 0.07679,
    "h": 21.4
  },
  "luminance": 0.02777
}

Semantic roles & 50–950 ramp

primary

#511E1F

secondary

#458685

accent

#D6D352

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511E1F

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

Preview Lab → · Contrast checker → · Palette generator →