#511F1C#511F1C

#511F1C is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.3% C 0.076 H 25.8°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#511F1C
RGB	rgb(81, 31, 28)
HSL	hsl(3, 49%, 21%)
HSV	hsv(3, 65%, 32%)
CMYK	cmyk(0%, 61.7%, 65.4%, 68.2%)
CIE-LAB	lab(19.28, 23.18, 13.69)
CIE-LCH	lch(19.28, 26.92, 30.56°)
OKLab	oklab(31.3% 0.0683 0.0331)
OKLCH	oklch(31.3% 0.076 25.8)
XYZ	xyz(4.0933, 2.8136, 1.4259)
Luminance	0.0281 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511F1C #1C4E51

analogous

#511C34 #511F1C #513A1C

triadic

#511F1C #1C511F #1F1C51

tetradic

#511F1C #34511C #1C4E51 #3A1C51

square

#511F1C #34511C #1C4E51 #3A1C51

split-complementary

#511F1C #1C513A #1C3451

monochromatic

#170908 #240E0C #511F1C #7E302C #AC423B

Accessibility & contrast

On white

13.44

#511F1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#511F1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511F1C

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511F1C	#FFFFFF	#000000	##FFFFFF
##511F1C	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281B

Deuteranopia (green-blind)

#38331B

Tritanopia (blue-blind)

#59161F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #511f1c;
/* rgb */ color: rgb(81, 31, 28);
/* oklch */ color: oklch(31.3% 0.076 25.8);

Tailwind

colors: {
  custom: {
    50: '#865d58',
    500: '#511f1c',
    950: '#000000',
  },
}

SCSS

$custom: #511f1c;
$custom-light: #865d58;
$custom-dark: #000000;

JSON

{
  "hex": "#511f1c",
  "rgb": {
    "r": 81,
    "g": 31,
    "b": 28
  },
  "hsl": {
    "h": 3.396,
    "s": 48.624,
    "l": 21.373
  },
  "oklch": {
    "l": 0.31302,
    "c": 0.07589,
    "h": 25.8
  },
  "luminance": 0.02813
}

Semantic roles & 50–950 ramp

primary

#511F1C

secondary

#428387

accent

#D0D850

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511F1C

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

Preview Lab → · Contrast checker → · Palette generator →