#671B1B#671B1B

#671B1B is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.8% C 0.109 H 24.8°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#671B1B
RGB	rgb(103, 27, 27)
HSL	hsl(0, 58%, 25%)
HSV	hsv(0, 74%, 40%)
CMYK	cmyk(0%, 73.8%, 73.8%, 59.6%)
CIE-LAB	lab(22.82, 33.78, 19.69)
CIE-LCH	lch(22.82, 39.10, 30.24°)
OKLab	oklab(34.77% 0.0985 0.0455)
OKLCH	oklch(34.77% 0.109 24.8)
XYZ	xyz(6.1840, 3.7475, 1.4344)
Luminance	0.0375 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#671B1B #1B6767

analogous

#671B41 #671B1B #67411B

triadic

#671B1B #1B671B #1B1B67

tetradic

#671B1B #41671B #1B6767 #411B67

square

#671B1B #41671B #1B6767 #411B67

split-complementary

#671B1B #1B6741 #1B4167

monochromatic

#180606 #370E0E #671B1B #972828 #C83434

Accessibility & contrast

On white

12.00

#671B1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#671B1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #671B1B

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##671B1B	#FFFFFF	#000000	##FFFFFF
##671B1B	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C1A

Deuteranopia (green-blind)

#433C19

Tritanopia (blue-blind)

#72041C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #671b1b;
/* rgb */ color: rgb(103, 27, 27);
/* oklch */ color: oklch(34.8% 0.109 24.8);

Tailwind

colors: {
  custom: {
    50: '#995d57',
    500: '#671b1b',
    950: '#000000',
  },
}

SCSS

$custom: #671b1b;
$custom-light: #995d57;
$custom-dark: #000000;

JSON

{
  "hex": "#671b1b",
  "rgb": {
    "r": 103,
    "g": 27,
    "b": 27
  },
  "hsl": {
    "h": 0,
    "s": 58.462,
    "l": 25.49
  },
  "oklch": {
    "l": 0.34766,
    "c": 0.10854,
    "h": 24.8
  },
  "luminance": 0.03747
}

Semantic roles & 50–950 ramp

primary

#671B1B

secondary

#429C9C

accent

#E2E246

background

#FAF5F5

surface

#F3E9E9

border

#CDC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #671B1B

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

Preview Lab → · Contrast checker → · Palette generator →