#511C15#511C15

#511C15 is a dark, moderate red. Relative luminance 0.026; OKLCH L 30.7% C 0.081 H 30.0°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#511C15
RGB	rgb(81, 28, 21)
HSL	hsl(7, 59%, 20%)
HSV	hsv(7, 74%, 32%)
CMYK	cmyk(0%, 65.4%, 74.1%, 68.2%)
CIE-LAB	lab(18.52, 24.33, 17.49)
CIE-LCH	lch(18.52, 29.96, 35.71°)
OKLab	oklab(30.68% 0.0704 0.0406)
OKLCH	oklch(30.68% 0.081 30)
XYZ	xyz(3.9443, 2.6345, 1.0101)
Luminance	0.0263 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C15 #154A51

analogous

#51152C #511C15 #513A15

triadic

#511C15 #15511C #1C1551

tetradic

#511C15 #2C5115 #154A51 #3A1551

square

#511C15 #2C5115 #154A51 #3A1551

split-complementary

#511C15 #15513A #152C51

monochromatic

#180806 #200B08 #511C15 #822D22 #B23E2E

Accessibility & contrast

On white

13.75

#511C15 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#511C15 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C15

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C15	#FFFFFF	#000000	##FFFFFF
##511C15	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2614

Deuteranopia (green-blind)

#373114

Tritanopia (blue-blind)

#5A111B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #511c15;
/* rgb */ color: rgb(81, 28, 21);
/* oklch */ color: oklch(30.7% 0.081 30.0);

Tailwind

colors: {
  custom: {
    50: '#875b52',
    500: '#511c15',
    950: '#000000',
  },
}

SCSS

$custom: #511c15;
$custom-light: #875b52;
$custom-dark: #000000;

JSON

{
  "hex": "#511c15",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 21
  },
  "hsl": {
    "h": 7,
    "s": 58.824,
    "l": 20
  },
  "oklch": {
    "l": 0.30683,
    "c": 0.0813,
    "h": 30
  },
  "luminance": 0.02634
}

Semantic roles & 50–950 ramp

primary

#511C15

secondary

#397F89

accent

#D0E246

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0402

muted

#7D7978

Preview Lab

Preview with #511C15

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

Preview Lab → · Contrast checker → · Palette generator →