#550F1B#550F1B

#550F1B is a dark, moderate red. Relative luminance 0.024; OKLCH L 29.9% C 0.101 H 16.6°. Best body text is #FFFFFF at 14.28:1 contrast (WCAG AA passes).

Color values

HEX	#550F1B
RGB	rgb(85, 15, 27)
HSL	hsl(350, 70%, 20%)
HSV	hsv(350, 82%, 33%)
CMYK	cmyk(0%, 82.4%, 68.2%, 66.7%)
CIE-LAB	lab(17.24, 32.30, 11.90)
CIE-LCH	lch(17.24, 34.43, 20.23°)
OKLab	oklab(29.92% 0.0965 0.0288)
OKLCH	oklch(29.92% 0.101 16.6)
XYZ	xyz(4.1154, 2.3527, 1.2741)
Luminance	0.0235 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#550F1B #0F5549

analogous

#550F3E #550F1B #55260F

triadic

#550F1B #1B550F #0F1B55

tetradic

#550F1B #3E550F #0F5549 #260F55

square

#550F1B #3E550F #0F5549 #260F55

split-complementary

#550F1B #0F5526 #0F3E55

monochromatic

#1A0508 #21060A #550F1B #89182C #BD213C

Accessibility & contrast

On white

14.28

#550F1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#550F1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #550F1B

14.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##550F1B	#FFFFFF	#000000	##FFFFFF
##550F1B	1.00	14.28	1.47	14.28
#FFFFFF	14.28	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23211B

Deuteranopia (green-blind)

#353019

Tritanopia (blue-blind)

#5E0014

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #550f1b;
/* rgb */ color: rgb(85, 15, 27);
/* oklch */ color: oklch(29.9% 0.101 16.6);

Tailwind

colors: {
  custom: {
    50: '#8a5557',
    500: '#550f1b',
    950: '#000000',
  },
}

SCSS

$custom: #550f1b;
$custom-light: #8a5557;
$custom-dark: #000000;

JSON

{
  "hex": "#550f1b",
  "rgb": {
    "r": 85,
    "g": 15,
    "b": 27
  },
  "hsl": {
    "h": 349.714,
    "s": 70,
    "l": 19.608
  },
  "oklch": {
    "l": 0.29918,
    "c": 0.10068,
    "h": 16.6
  },
  "luminance": 0.02352
}

Semantic roles & 50–950 ramp

primary

#550F1B

secondary

#318F7F

accent

#EDCE3B

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0303

muted

#7E7878

Preview Lab

Preview with #550F1B

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

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