#511B25#511B25

#511B25 is a dark, moderate red. Relative luminance 0.027; OKLCH L 30.9% C 0.081 H 11.9°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#511B25
RGB	rgb(81, 27, 37)
HSL	hsl(349, 50%, 21%)
HSV	hsv(349, 67%, 32%)
CMYK	cmyk(0%, 66.7%, 54.3%, 68.2%)
CIE-LAB	lab(18.66, 26.24, 6.57)
CIE-LCH	lch(18.66, 27.05, 14.06°)
OKLab	oklab(30.9% 0.0794 0.0168)
OKLCH	oklch(30.9% 0.081 11.9)
XYZ	xyz(4.1195, 2.6673, 2.0478)
Luminance	0.0267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B25 #1B5147

analogous

#511B40 #511B25 #512C1B

triadic

#511B25 #25511B #1B2551

tetradic

#511B25 #40511B #1B5147 #2C1B51

square

#511B25 #40511B #1B5147 #2C1B51

split-complementary

#511B25 #1B512C #1B4051

monochromatic

#17080A #230C10 #511B25 #7F2A3A #AD3A4F

Accessibility & contrast

On white

13.70

#511B25 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511B25 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B25

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B25	#FFFFFF	#000000	##FFFFFF
##511B25	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272725

Deuteranopia (green-blind)

#353124

Tritanopia (blue-blind)

#59131F

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511b25;
/* rgb */ color: rgb(81, 27, 37);
/* oklch */ color: oklch(30.9% 0.081 11.9);

Tailwind

colors: {
  custom: {
    50: '#855a5f',
    500: '#511b25',
    950: '#000000',
  },
}

SCSS

$custom: #511b25;
$custom-light: #855a5f;
$custom-dark: #000000;

JSON

{
  "hex": "#511b25",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 37
  },
  "hsl": {
    "h": 348.889,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.30902,
    "c": 0.08116,
    "h": 11.9
  },
  "luminance": 0.02667
}

Semantic roles & 50–950 ramp

primary

#511B25

secondary

#41877A

accent

#DAC04E

background

#F8F5F5

surface

#F0E9E9

border

#CBC5C5

text

#0B0404

muted

#7C7979

Preview Lab

Preview with #511B25

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

Preview Lab → · Contrast checker → · Palette generator →