#511B27#511B27

#511B27 is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.0% C 0.081 H 9.6°. Best body text is #FFFFFF at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#511B27
RGB	rgb(81, 27, 39)
HSL	hsl(347, 50%, 21%)
HSV	hsv(347, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 51.9%, 68.2%)
CIE-LAB	lab(18.71, 26.46, 5.23)
CIE-LCH	lch(18.71, 26.97, 11.19°)
OKLab	oklab(30.96% 0.0803 0.0136)
OKLCH	oklch(30.96% 0.081 9.6)
XYZ	xyz(4.1518, 2.6802, 2.2178)
Luminance	0.0268 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B27 #1B5145

analogous

#511B42 #511B27 #512A1B

triadic

#511B27 #27511B #1B2751

tetradic

#511B27 #42511B #1B5145 #2A1B51

square

#511B27 #42511B #1B5145 #2A1B51

split-complementary

#511B27 #1B512A #1B4251

monochromatic

#17080B #230C11 #511B27 #7F2A3D #AD3A53

Accessibility & contrast

On white

13.67

#511B27 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#511B27 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B27

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B27	#FFFFFF	#000000	##FFFFFF
##511B27	1.00	13.67	1.54	13.67
#FFFFFF	13.67	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272727

Deuteranopia (green-blind)

#353226

Tritanopia (blue-blind)

#591320

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511b27;
/* rgb */ color: rgb(81, 27, 39);
/* oklch */ color: oklch(31.0% 0.081 9.6);

Tailwind

colors: {
  custom: {
    50: '#855a60',
    500: '#511b27',
    950: '#000000',
  },
}

SCSS

$custom: #511b27;
$custom-light: #855a60;
$custom-dark: #000000;

JSON

{
  "hex": "#511b27",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 39
  },
  "hsl": {
    "h": 346.667,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30962,
    "c": 0.08145,
    "h": 9.6
  },
  "luminance": 0.0268
}

Semantic roles & 50–950 ramp

primary

#511B27

secondary

#418777

accent

#DABB4E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0B0405

muted

#7C7979

Preview Lab

Preview with #511B27

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

Preview Lab → · Contrast checker → · Palette generator →