#511E1C#511E1C

#511E1C is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.1% C 0.077 H 24.8°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#511E1C
RGB	rgb(81, 30, 28)
HSL	hsl(2, 49%, 21%)
HSV	hsv(2, 65%, 32%)
CMYK	cmyk(0%, 63%, 65.4%, 68.2%)
CIE-LAB	lab(19.07, 23.75, 13.41)
CIE-LCH	lch(19.07, 27.27, 29.45°)
OKLab	oklab(31.14% 0.0701 0.0324)
OKLCH	oklch(31.14% 0.077 24.8)
XYZ	xyz(4.0676, 2.7622, 1.4173)
Luminance	0.0276 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511E1C #1C4F51

analogous

#511C35 #511E1C #51391C

triadic

#511E1C #1C511E #1E1C51

tetradic

#511E1C #35511C #1C4F51 #391C51

square

#511E1C #35511C #1C4F51 #391C51

split-complementary

#511E1C #1C5139 #1C3551

monochromatic

#170808 #240D0C #511E1C #7E2F2C #AC403B

Accessibility & contrast

On white

13.53

#511E1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#511E1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511E1C

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511E1C	#FFFFFF	#000000	##FFFFFF
##511E1C	1.00	13.53	1.55	13.53
#FFFFFF	13.53	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281B

Deuteranopia (green-blind)

#37321B

Tritanopia (blue-blind)

#59151E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511e1c;
/* rgb */ color: rgb(81, 30, 28);
/* oklch */ color: oklch(31.1% 0.077 24.8);

Tailwind

colors: {
  custom: {
    50: '#865c58',
    500: '#511e1c',
    950: '#000000',
  },
}

SCSS

$custom: #511e1c;
$custom-light: #865c58;
$custom-dark: #000000;

JSON

{
  "hex": "#511e1c",
  "rgb": {
    "r": 81,
    "g": 30,
    "b": 28
  },
  "hsl": {
    "h": 2.264,
    "s": 48.624,
    "l": 21.373
  },
  "oklch": {
    "l": 0.31139,
    "c": 0.07722,
    "h": 24.8
  },
  "luminance": 0.02762
}

Semantic roles & 50–950 ramp

primary

#511E1C

secondary

#428487

accent

#D3D850

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511E1C

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

Preview Lab → · Contrast checker → · Palette generator →