#331B1D#331B1D

#331B1D is a dark, muted red. Relative luminance 0.016; OKLCH L 25.5% C 0.038 H 14.7°. Best body text is #FFFFFF at 15.97:1 contrast (WCAG AA passes).

Color values

HEX	#331B1D
RGB	rgb(51, 27, 29)
HSL	hsl(355, 31%, 15%)
HSV	hsv(355, 47%, 20%)
CMYK	cmyk(0%, 47.1%, 43.1%, 80%)
CIE-LAB	lab(13.09, 12.18, 3.72)
CIE-LCH	lch(13.09, 12.74, 16.98°)
OKLab	oklab(25.54% 0.0369 0.0097)
OKLCH	oklch(25.54% 0.038 14.7)
XYZ	xyz(1.9790, 1.5765, 1.3622)
Luminance	0.0158 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B1D #1B3331

analogous

#331B29 #331B1D #33251B

triadic

#331B1D #1D331B #1B1D33

tetradic

#331B1D #29331B #1B3331 #251B33

square

#331B1D #29331B #1B3331 #251B33

split-complementary

#331B1D #1B3325 #1B2933

monochromatic

#140B0B #140B0B #331B1D #5B3034 #83454B

Accessibility & contrast

On white

15.97

#331B1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#331B1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B1D

15.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B1D	#FFFFFF	#000000	##FFFFFF
##331B1D	1.00	15.97	1.32	15.97
#FFFFFF	15.97	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1F1D

Deuteranopia (green-blind)

#25241D

Tritanopia (blue-blind)

#37181C

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #331b1d;
/* rgb */ color: rgb(51, 27, 29);
/* oklch */ color: oklch(25.5% 0.038 14.7);

Tailwind

colors: {
  custom: {
    50: '#6c5758',
    500: '#331b1d',
    950: '#000000',
  },
}

SCSS

$custom: #331b1d;
$custom-light: #6c5758;
$custom-dark: #000000;

JSON

{
  "hex": "#331b1d",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 29
  },
  "hsl": {
    "h": 355,
    "s": 30.769,
    "l": 15.294
  },
  "oklch": {
    "l": 0.25542,
    "c": 0.03818,
    "h": 14.7
  },
  "luminance": 0.01576
}

Semantic roles & 50–950 ramp

primary

#331B1D

secondary

#436764

accent

#C7BE61

background

#F6F5F5

surface

#EBE9E9

border

#C6C5C5

text

#070303

muted

#7A7878

Preview Lab

Preview with #331B1D

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

Preview Lab → · Contrast checker → · Palette generator →