#310F0B#310F0B

#310F0B is a very dark, muted red. Relative luminance 0.010; OKLCH L 22.3% C 0.057 H 29.1°. Best body text is #FFFFFF at 17.44:1 contrast (WCAG AA passes).

Color values

HEX	#310F0B
RGB	rgb(49, 15, 11)
HSL	hsl(6, 63%, 12%)
HSV	hsv(6, 78%, 19%)
CMYK	cmyk(0%, 69.4%, 77.6%, 80.8%)
CIE-LAB	lab(9.15, 16.96, 9.56)
CIE-LCH	lch(9.15, 19.47, 29.41°)
OKLab	oklab(22.33% 0.0494 0.0275)
OKLCH	oklch(22.33% 0.057 29.1)
XYZ	xyz(1.4980, 1.0190, 0.4343)
Luminance	0.0102 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310F0B #0B2D31

analogous

#310B1A #310F0B #31220B

triadic

#310F0B #0B310F #0F0B31

tetradic

#310F0B #1A310B #0B2D31 #220B31

square

#310F0B #1A310B #0B2D31 #220B31

split-complementary

#310F0B #0B3122 #0B1A31

monochromatic

#190806 #190806 #310F0B #631E16 #952E21

Accessibility & contrast

On white

17.44

#310F0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#310F0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310F0B

17.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310F0B	#FFFFFF	#000000	##FFFFFF
##310F0B	1.00	17.44	1.20	17.44
#FFFFFF	17.44	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18150A

Deuteranopia (green-blind)

#201D0A

Tritanopia (blue-blind)

#37080E

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #310f0b;
/* rgb */ color: rgb(49, 15, 11);
/* oklch */ color: oklch(22.3% 0.057 29.1);

Tailwind

colors: {
  custom: {
    50: '#6c4f4b',
    500: '#310f0b',
    950: '#000000',
  },
}

SCSS

$custom: #310f0b;
$custom-light: #6c4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#310f0b",
  "rgb": {
    "r": 49,
    "g": 15,
    "b": 11
  },
  "hsl": {
    "h": 6.316,
    "s": 63.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.22326,
    "c": 0.05652,
    "h": 29.1
  },
  "luminance": 0.01019
}

Semantic roles & 50–950 ramp

primary

#310F0B

secondary

#2A666E

accent

#D5E641

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070201

muted

#7A7877

Preview Lab

Preview with #310F0B

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

Preview Lab → · Contrast checker → · Palette generator →