#331B21#331B21

#331B21 is a dark, muted red. Relative luminance 0.016; OKLCH L 25.7% C 0.039 H 4.0°. Best body text is #FFFFFF at 15.92:1 contrast (WCAG AA passes).

Color values

HEX	#331B21
RGB	rgb(51, 27, 33)
HSL	hsl(345, 31%, 15%)
HSV	hsv(345, 47%, 20%)
CMYK	cmyk(0%, 47.1%, 35.3%, 80%)
CIE-LAB	lab(13.22, 12.84, 0.98)
CIE-LCH	lch(13.22, 12.87, 4.37°)
OKLab	oklab(25.68% 0.0389 0.0027)
OKLCH	oklch(25.68% 0.039 4)
XYZ	xyz(2.0318, 1.5976, 1.6399)
Luminance	0.0160 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B21 #1B332D

analogous

#331B2D #331B21 #33211B

triadic

#331B21 #21331B #1B2133

tetradic

#331B21 #2D331B #1B332D #211B33

square

#331B21 #2D331B #1B332D #211B33

split-complementary

#331B21 #1B3321 #1B2D33

monochromatic

#140B0D #140B0D #331B21 #5B303B #834555

Accessibility & contrast

On white

15.92

#331B21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#331B21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B21

15.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B21	#FFFFFF	#000000	##FFFFFF
##331B21	1.00	15.92	1.32	15.92
#FFFFFF	15.92	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F1F21

Deuteranopia (green-blind)

#252420

Tritanopia (blue-blind)

#37191D

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #331b21;
/* rgb */ color: rgb(51, 27, 33);
/* oklch */ color: oklch(25.7% 0.039 4.0);

Tailwind

colors: {
  custom: {
    50: '#6b575c',
    500: '#331b21',
    950: '#000000',
  },
}

SCSS

$custom: #331b21;
$custom-light: #6b575c;
$custom-dark: #000000;

JSON

{
  "hex": "#331b21",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 33
  },
  "hsl": {
    "h": 345,
    "s": 30.769,
    "l": 15.294
  },
  "oklch": {
    "l": 0.25683,
    "c": 0.03896,
    "h": 4
  },
  "luminance": 0.01597
}

Semantic roles & 50–950 ramp

primary

#331B21

secondary

#43675E

accent

#C7AD61

background

#F6F5F5

surface

#EBE9E9

border

#C6C5C5

text

#070304

muted

#7A7879

Preview Lab

Preview with #331B21

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

Preview Lab → · Contrast checker → · Palette generator →