#671B21#671B21

#671B21 is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.9% C 0.108 H 20.5°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#671B21
RGB	rgb(103, 27, 33)
HSL	hsl(355, 58%, 25%)
HSV	hsv(355, 74%, 40%)
CMYK	cmyk(0%, 73.8%, 68%, 59.6%)
CIE-LAB	lab(22.92, 34.15, 15.80)
CIE-LCH	lch(22.92, 37.63, 24.83°)
OKLab	oklab(34.88% 0.1011 0.0377)
OKLCH	oklch(34.88% 0.108 20.5)
XYZ	xyz(6.2606, 3.7781, 1.8381)
Luminance	0.0378 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#671B21 #1B6761

analogous

#671B47 #671B21 #673B1B

triadic

#671B21 #21671B #1B2167

tetradic

#671B21 #47671B #1B6761 #3B1B67

square

#671B21 #47671B #1B6761 #3B1B67

split-complementary

#671B21 #1B673B #1B4767

monochromatic

#180608 #370E11 #671B21 #972831 #C83440

Accessibility & contrast

On white

11.96

#671B21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#671B21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #671B21

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##671B21	#FFFFFF	#000000	##FFFFFF
##671B21	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C21

Deuteranopia (green-blind)

#433D1F

Tritanopia (blue-blind)

#72061E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #671b21;
/* rgb */ color: rgb(103, 27, 33);
/* oklch */ color: oklch(34.9% 0.108 20.5);

Tailwind

colors: {
  custom: {
    50: '#985d5c',
    500: '#671b21',
    950: '#000000',
  },
}

SCSS

$custom: #671b21;
$custom-light: #985d5c;
$custom-dark: #000000;

JSON

{
  "hex": "#671b21",
  "rgb": {
    "r": 103,
    "g": 27,
    "b": 33
  },
  "hsl": {
    "h": 355.263,
    "s": 58.462,
    "l": 25.49
  },
  "oklch": {
    "l": 0.34879,
    "c": 0.1079,
    "h": 20.5
  },
  "luminance": 0.03777
}

Semantic roles & 50–950 ramp

primary

#671B21

secondary

#429C95

accent

#E2D546

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0404

muted

#7E7979

Preview Lab

Preview with #671B21

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

Preview Lab → · Contrast checker → · Palette generator →