#310B0F#310B0F

#310B0F is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.062 H 17.7°. Best body text is #FFFFFF at 17.72:1 contrast (WCAG AA passes).

Color values

HEX	#310B0F
RGB	rgb(49, 11, 15)
HSL	hsl(354, 63%, 12%)
HSV	hsv(354, 78%, 19%)
CMYK	cmyk(0%, 77.6%, 69.4%, 80.8%)
CIE-LAB	lab(8.37, 19.62, 6.51)
CIE-LCH	lch(8.37, 20.67, 18.37°)
OKLab	oklab(21.77% 0.0587 0.0188)
OKLCH	oklch(21.77% 0.062 17.7)
XYZ	xyz(1.4727, 0.9270, 0.5532)
Luminance	0.0093 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B0F #0B312D

analogous

#310B22 #310B0F #311A0B

triadic

#310B0F #0F310B #0B0F31

tetradic

#310B0F #22310B #0B312D #1A0B31

square

#310B0F #22310B #0B312D #1A0B31

split-complementary

#310B0F #0B311A #0B2231

monochromatic

#190608 #190608 #310B0F #63161E #95212E

Accessibility & contrast

On white

17.72

#310B0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310B0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B0F

17.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B0F	#FFFFFF	#000000	##FFFFFF
##310B0F	1.00	17.72	1.19	17.72
#FFFFFF	17.72	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14130F

Deuteranopia (green-blind)

#1E1B0E

Tritanopia (blue-blind)

#36050D

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310b0f;
/* rgb */ color: rgb(49, 11, 15);
/* oklch */ color: oklch(21.8% 0.062 17.7);

Tailwind

colors: {
  custom: {
    50: '#6c4c4e',
    500: '#310b0f',
    950: '#000000',
  },
}

SCSS

$custom: #310b0f;
$custom-light: #6c4c4e;
$custom-dark: #000000;

JSON

{
  "hex": "#310b0f",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 15
  },
  "hsl": {
    "h": 353.684,
    "s": 63.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.21768,
    "c": 0.06158,
    "h": 17.7
  },
  "luminance": 0.00927
}

Semantic roles & 50–950 ramp

primary

#310B0F

secondary

#2A6E66

accent

#E6D541

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310B0F

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

Preview Lab → · Contrast checker → · Palette generator →