#511F18#511F18

#511F18 is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.2% C 0.077 H 30.1°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#511F18
RGB	rgb(81, 31, 24)
HSL	hsl(7, 54%, 21%)
HSV	hsv(7, 70%, 32%)
CMYK	cmyk(0%, 61.7%, 70.4%, 68.2%)
CIE-LAB	lab(19.21, 22.87, 16.31)
CIE-LCH	lch(19.21, 28.09, 35.50°)
OKLab	oklab(31.22% 0.0665 0.0385)
OKLCH	oklch(31.22% 0.077 30.1)
XYZ	xyz(4.0486, 2.7958, 1.1904)
Luminance	0.0279 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511F18 #184A51

analogous

#51182D #511F18 #513B18

triadic

#511F18 #18511F #1F1851

tetradic

#511F18 #2D5118 #184A51 #3B1851

square

#511F18 #2D5118 #184A51 #3B1851

split-complementary

#511F18 #18513B #182D51

monochromatic

#180907 #220D0A #511F18 #803126 #AF4334

Accessibility & contrast

On white

13.47

#511F18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#511F18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511F18

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511F18	#FFFFFF	#000000	##FFFFFF
##511F18	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2817

Deuteranopia (green-blind)

#383317

Tritanopia (blue-blind)

#59151E

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #511f18;
/* rgb */ color: rgb(81, 31, 24);
/* oklch */ color: oklch(31.2% 0.077 30.1);

Tailwind

colors: {
  custom: {
    50: '#865c55',
    500: '#511f18',
    950: '#000000',
  },
}

SCSS

$custom: #511f18;
$custom-light: #865c55;
$custom-dark: #000000;

JSON

{
  "hex": "#511f18",
  "rgb": {
    "r": 81,
    "g": 31,
    "b": 24
  },
  "hsl": {
    "h": 7.368,
    "s": 54.286,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31221,
    "c": 0.07685,
    "h": 30.1
  },
  "luminance": 0.02795
}

Semantic roles & 50–950 ramp

primary

#511F18

secondary

#3D7F88

accent

#CCDE4A

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0403

muted

#7D7978

Preview Lab

Preview with #511F18

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

Preview Lab → · Contrast checker → · Palette generator →