#511B28#511B28

#511B28 is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.0% C 0.082 H 8.4°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#511B28
RGB	rgb(81, 27, 40)
HSL	hsl(346, 50%, 21%)
HSV	hsv(346, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 50.6%, 68.2%)
CIE-LAB	lab(18.74, 26.57, 4.57)
CIE-LCH	lch(18.74, 26.96, 9.75°)
OKLab	oklab(30.99% 0.0808 0.0119)
OKLCH	oklch(30.99% 0.082 8.4)
XYZ	xyz(4.1686, 2.6869, 2.3062)
Luminance	0.0269 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B28 #1B5144

analogous

#511B43 #511B28 #51291B

triadic

#511B28 #28511B #1B2851

tetradic

#511B28 #43511B #1B5144 #291B51

square

#511B28 #43511B #1B5144 #291B51

split-complementary

#511B28 #1B5129 #1B4351

monochromatic

#17080B #230C11 #511B28 #7F2A3F #AD3A55

Accessibility & contrast

On white

13.66

#511B28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#511B28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B28

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B28	#FFFFFF	#000000	##FFFFFF
##511B28	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#262728

Deuteranopia (green-blind)

#343227

Tritanopia (blue-blind)

#581420

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #511b28;
/* rgb */ color: rgb(81, 27, 40);
/* oklch */ color: oklch(31.0% 0.082 8.4);

Tailwind

colors: {
  custom: {
    50: '#855a61',
    500: '#511b28',
    950: '#000000',
  },
}

SCSS

$custom: #511b28;
$custom-light: #855a61;
$custom-dark: #000000;

JSON

{
  "hex": "#511b28",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 40
  },
  "hsl": {
    "h": 345.556,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30993,
    "c": 0.08162,
    "h": 8.4
  },
  "luminance": 0.02686
}

Semantic roles & 50–950 ramp

primary

#511B28

secondary

#418776

accent

#DAB84E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0B0405

muted

#7C7979

Preview Lab

Preview with #511B28

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

Preview Lab → · Contrast checker → · Palette generator →