#31100F#31100F

#31100F is a very dark, muted red. Relative luminance 0.011; OKLCH L 22.6% C 0.054 H 24.1°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#31100F
RGB	rgb(49, 16, 15)
HSL	hsl(2, 53%, 13%)
HSV	hsv(2, 69%, 19%)
CMYK	cmyk(0%, 67.3%, 69.4%, 80.8%)
CIE-LAB	lab(9.47, 16.70, 8.10)
CIE-LCH	lch(9.47, 18.56, 25.86°)
OKLab	oklab(22.6% 0.0495 0.0221)
OKLCH	oklch(22.6% 0.054 24.1)
XYZ	xyz(1.5383, 1.0582, 0.5751)
Luminance	0.0106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31100F #0F3031

analogous

#310F1F #31100F #31210F

triadic

#31100F #0F3110 #100F31

tetradic

#31100F #1F310F #0F3031 #210F31

square

#31100F #1F310F #0F3031 #210F31

split-complementary

#31100F #0F3121 #0F1F31

monochromatic

#170807 #170807 #31100F #601F1D #8F2F2C

Accessibility & contrast

On white

17.33

#31100F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#31100F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31100F

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31100F	#FFFFFF	#000000	##FFFFFF
##31100F	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18160F

Deuteranopia (green-blind)

#201D0E

Tritanopia (blue-blind)

#360A10

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #31100f;
/* rgb */ color: rgb(49, 16, 15);
/* oklch */ color: oklch(22.6% 0.054 24.1);

Tailwind

colors: {
  custom: {
    50: '#6c4f4e',
    500: '#31100f',
    950: '#000000',
  },
}

SCSS

$custom: #31100f;
$custom-light: #6c4f4e;
$custom-dark: #000000;

JSON

{
  "hex": "#31100f",
  "rgb": {
    "r": 49,
    "g": 16,
    "b": 15
  },
  "hsl": {
    "h": 1.765,
    "s": 53.125,
    "l": 12.549
  },
  "oklch": {
    "l": 0.22595,
    "c": 0.05418,
    "h": 24.1
  },
  "luminance": 0.01058
}

Semantic roles & 50–950 ramp

primary

#31100F

secondary

#31696B

accent

#D8DD4B

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070201

muted

#7A7877

Preview Lab

Preview with #31100F

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

Preview Lab → · Contrast checker → · Palette generator →