#511E1D#511E1D

#511E1D is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.2% C 0.077 H 23.7°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#511E1D
RGB	rgb(81, 30, 29)
HSL	hsl(1, 47%, 22%)
HSV	hsv(1, 64%, 32%)
CMYK	cmyk(0%, 63%, 64.2%, 68.2%)
CIE-LAB	lab(19.09, 23.83, 12.75)
CIE-LCH	lch(19.09, 27.03, 28.14°)
OKLab	oklab(31.16% 0.0705 0.031)
OKLCH	oklch(31.16% 0.077 23.7)
XYZ	xyz(4.0797, 2.7671, 1.4814)
Luminance	0.0277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511E1D #1D5051

analogous

#511D36 #511E1D #51381D

triadic

#511E1D #1D511E #1E1D51

tetradic

#511E1D #36511D #1D5051 #381D51

square

#511E1D #36511D #1D5051 #381D51

split-complementary

#511E1D #1D5138 #1D3651

monochromatic

#170808 #240D0D #511E1D #7E2F2D #AB3F3D

Accessibility & contrast

On white

13.52

#511E1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#511E1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511E1D

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511E1D	#FFFFFF	#000000	##FFFFFF
##511E1D	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281D

Deuteranopia (green-blind)

#37321C

Tritanopia (blue-blind)

#59151E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511e1d;
/* rgb */ color: rgb(81, 30, 29);
/* oklch */ color: oklch(31.2% 0.077 23.7);

Tailwind

colors: {
  custom: {
    50: '#865c58',
    500: '#511e1d',
    950: '#000000',
  },
}

SCSS

$custom: #511e1d;
$custom-light: #865c58;
$custom-dark: #000000;

JSON

{
  "hex": "#511e1d",
  "rgb": {
    "r": 81,
    "g": 30,
    "b": 29
  },
  "hsl": {
    "h": 1.154,
    "s": 47.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.31161,
    "c": 0.07705,
    "h": 23.7
  },
  "luminance": 0.02767
}

Semantic roles & 50–950 ramp

primary

#511E1D

secondary

#448586

accent

#D4D751

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511E1D

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

Preview Lab → · Contrast checker → · Palette generator →