#6B1521#6B1521

#6B1521 is a dark, moderate red. Relative luminance 0.038; OKLCH L 35.0% C 0.119 H 18.6°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#6B1521
RGB	rgb(107, 21, 33)
HSL	hsl(352, 67%, 25%)
HSV	hsv(352, 80%, 42%)
CMYK	cmyk(0%, 80.4%, 69.2%, 58%)
CIE-LAB	lab(22.91, 37.88, 15.95)
CIE-LCH	lch(22.91, 41.11, 22.84°)
OKLab	oklab(35.02% 0.1124 0.0379)
OKLCH	oklch(35.02% 0.119 18.6)
XYZ	xyz(6.6068, 3.7729, 1.8189)
Luminance	0.0377 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6B1521 #156B5F

analogous

#6B154C #6B1521 #6B3415

triadic

#6B1521 #216B15 #15216B

tetradic

#6B1521 #4C6B15 #156B5F #34156B

square

#6B1521 #4C6B15 #156B5F #34156B

split-complementary

#6B1521 #156B34 #154C6B

monochromatic

#1A0508 #380B11 #6B1521 #9E1F31 #D12941

Accessibility & contrast

On white

11.97

#6B1521 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#6B1521 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #6B1521

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6B1521	#FFFFFF	#000000	##FFFFFF
##6B1521	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2B21

Deuteranopia (green-blind)

#443D1E

Tritanopia (blue-blind)

#76001A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #6b1521;
/* rgb */ color: rgb(107, 21, 33);
/* oklch */ color: oklch(35.0% 0.119 18.6);

Tailwind

colors: {
  custom: {
    50: '#9c5b5c',
    500: '#6b1521',
    950: '#000000',
  },
}

SCSS

$custom: #6b1521;
$custom-light: #9c5b5c;
$custom-dark: #000000;

JSON

{
  "hex": "#6b1521",
  "rgb": {
    "r": 107,
    "g": 21,
    "b": 33
  },
  "hsl": {
    "h": 351.628,
    "s": 67.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35017,
    "c": 0.11866,
    "h": 18.6
  },
  "luminance": 0.03772
}

Semantic roles & 50–950 ramp

primary

#6B1521

secondary

#3AA293

accent

#EAD23E

background

#FAF5F5

surface

#F4E9E9

border

#CEC5C5

text

#0F0404

muted

#7F7979

Preview Lab

Preview with #6B1521

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

Preview Lab → · Contrast checker → · Palette generator →