#511F1F#511F1F

#511F1F is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.4% C 0.075 H 22.4°. Best body text is #FFFFFF at 13.41:1 contrast (WCAG AA passes).

Color values

HEX	#511F1F
RGB	rgb(81, 31, 31)
HSL	hsl(0, 45%, 22%)
HSV	hsv(0, 62%, 32%)
CMYK	cmyk(0%, 61.7%, 61.7%, 68.2%)
CIE-LAB	lab(19.34, 23.45, 11.70)
CIE-LCH	lch(19.34, 26.21, 26.52°)
OKLab	oklab(31.37% 0.0697 0.0287)
OKLCH	oklch(31.37% 0.075 22.4)
XYZ	xyz(4.1310, 2.8287, 1.6245)
Luminance	0.0283 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511F1F #1F5151

analogous

#511F38 #511F1F #51381F

triadic

#511F1F #1F511F #1F1F51

tetradic

#511F1F #38511F #1F5151 #381F51

square

#511F1F #38511F #1F5151 #381F51

split-complementary

#511F1F #1F5138 #1F3851

monochromatic

#160808 #250E0E #511F1F #7D3030 #AA4141

Accessibility & contrast

On white

13.41

#511F1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#511F1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511F1F

13.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511F1F	#FFFFFF	#000000	##FFFFFF
##511F1F	1.00	13.41	1.57	13.41
#FFFFFF	13.41	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281F

Deuteranopia (green-blind)

#38331E

Tritanopia (blue-blind)

#59171F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #511f1f;
/* rgb */ color: rgb(81, 31, 31);
/* oklch */ color: oklch(31.4% 0.075 22.4);

Tailwind

colors: {
  custom: {
    50: '#865d5a',
    500: '#511f1f',
    950: '#000000',
  },
}

SCSS

$custom: #511f1f;
$custom-light: #865d5a;
$custom-dark: #000000;

JSON

{
  "hex": "#511f1f",
  "rgb": {
    "r": 81,
    "g": 31,
    "b": 31
  },
  "hsl": {
    "h": 0,
    "s": 44.643,
    "l": 21.961
  },
  "oklch": {
    "l": 0.3137,
    "c": 0.07539,
    "h": 22.4
  },
  "luminance": 0.02828
}

Semantic roles & 50–950 ramp

primary

#511F1F

secondary

#468686

accent

#D4D453

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511F1F

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

Preview Lab → · Contrast checker → · Palette generator →