#511F1D#511F1D

#511F1D is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.3% C 0.076 H 24.7°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#511F1D
RGB	rgb(81, 31, 29)
HSL	hsl(2, 47%, 22%)
HSV	hsv(2, 64%, 32%)
CMYK	cmyk(0%, 61.7%, 64.2%, 68.2%)
CIE-LAB	lab(19.30, 23.27, 13.03)
CIE-LCH	lch(19.30, 26.67, 29.24°)
OKLab	oklab(31.32% 0.0688 0.0317)
OKLCH	oklch(31.32% 0.076 24.7)
XYZ	xyz(4.1055, 2.8185, 1.4900)
Luminance	0.0282 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511F1D #1D4F51

analogous

#511D35 #511F1D #51391D

triadic

#511F1D #1D511F #1F1D51

tetradic

#511F1D #35511D #1D4F51 #391D51

square

#511F1D #35511D #1D4F51 #391D51

split-complementary

#511F1D #1D5139 #1D3551

monochromatic

#170908 #240E0D #511F1D #7E302D #AB413D

Accessibility & contrast

On white

13.43

#511F1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#511F1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511F1D

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511F1D	#FFFFFF	#000000	##FFFFFF
##511F1D	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281D

Deuteranopia (green-blind)

#38331C

Tritanopia (blue-blind)

#59161F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #511f1d;
/* rgb */ color: rgb(81, 31, 29);
/* oklch */ color: oklch(31.3% 0.076 24.7);

Tailwind

colors: {
  custom: {
    50: '#865d58',
    500: '#511f1d',
    950: '#000000',
  },
}

SCSS

$custom: #511f1d;
$custom-light: #865d58;
$custom-dark: #000000;

JSON

{
  "hex": "#511f1d",
  "rgb": {
    "r": 81,
    "g": 31,
    "b": 29
  },
  "hsl": {
    "h": 2.308,
    "s": 47.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.31324,
    "c": 0.07571,
    "h": 24.7
  },
  "luminance": 0.02818
}

Semantic roles & 50–950 ramp

primary

#511F1D

secondary

#448486

accent

#D2D751

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511F1D

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

Preview Lab → · Contrast checker → · Palette generator →