#511F2B#511F2B

#511F2B is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.7% C 0.076 H 7.5°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#511F2B
RGB	rgb(81, 31, 43)
HSL	hsl(346, 45%, 22%)
HSV	hsv(346, 62%, 32%)
CMYK	cmyk(0%, 61.7%, 46.9%, 68.2%)
CIE-LAB	lab(19.66, 24.74, 3.75)
CIE-LCH	lch(19.66, 25.03, 8.62°)
OKLab	oklab(31.71% 0.0752 0.0099)
OKLCH	oklch(31.71% 0.076 7.5)
XYZ	xyz(4.3197, 2.9042, 2.6181)
Luminance	0.0290 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511F2B #1F5145

analogous

#511F44 #511F2B #512C1F

triadic

#511F2B #2B511F #1F2B51

tetradic

#511F2B #44511F #1F5145 #2C1F51

square

#511F2B #44511F #1F5145 #2C1F51

split-complementary

#511F2B #1F512C #1F4451

monochromatic

#16080C #250E14 #511F2B #7D3042 #AA415A

Accessibility & contrast

On white

13.28

#511F2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#511F2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511F2B

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511F2B	#FFFFFF	#000000	##FFFFFF
##511F2B	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29292B

Deuteranopia (green-blind)

#36332A

Tritanopia (blue-blind)

#581923

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #511f2b;
/* rgb */ color: rgb(81, 31, 43);
/* oklch */ color: oklch(31.7% 0.076 7.5);

Tailwind

colors: {
  custom: {
    50: '#855d64',
    500: '#511f2b',
    950: '#000000',
  },
}

SCSS

$custom: #511f2b;
$custom-light: #855d64;
$custom-dark: #000000;

JSON

{
  "hex": "#511f2b",
  "rgb": {
    "r": 81,
    "g": 31,
    "b": 43
  },
  "hsl": {
    "h": 345.6,
    "s": 44.643,
    "l": 21.961
  },
  "oklch": {
    "l": 0.31706,
    "c": 0.07586,
    "h": 7.5
  },
  "luminance": 0.02904
}

Semantic roles & 50–950 ramp

primary

#511F2B

secondary

#468676

accent

#D4B553

background

#F8F5F5

surface

#EFE9EA

border

#CAC5C6

text

#0B0405

muted

#7C7979

Preview Lab

Preview with #511F2B

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

Preview Lab → · Contrast checker → · Palette generator →