#310B0E#310B0E

#310B0E is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.7% C 0.062 H 19.3°. Best body text is #FFFFFF at 17.72:1 contrast (WCAG AA passes).

Color values

HEX	#310B0E
RGB	rgb(49, 11, 14)
HSL	hsl(355, 63%, 12%)
HSV	hsv(355, 78%, 19%)
CMYK	cmyk(0%, 77.6%, 71.4%, 80.8%)
CIE-LAB	lab(8.34, 19.52, 7.00)
CIE-LCH	lch(8.34, 20.74, 19.71°)
OKLab	oklab(21.74% 0.0581 0.0204)
OKLCH	oklch(21.74% 0.062 19.3)
XYZ	xyz(1.4657, 0.9242, 0.5166)
Luminance	0.0092 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B0E #0B312E

analogous

#310B21 #310B0E #311B0B

triadic

#310B0E #0E310B #0B0E31

tetradic

#310B0E #21310B #0B312E #1B0B31

square

#310B0E #21310B #0B312E #1B0B31

split-complementary

#310B0E #0B311B #0B2131

monochromatic

#190607 #190607 #310B0E #63161C #95212B

Accessibility & contrast

On white

17.72

#310B0E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310B0E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B0E

17.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B0E	#FFFFFF	#000000	##FFFFFF
##310B0E	1.00	17.72	1.18	17.72
#FFFFFF	17.72	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15130E

Deuteranopia (green-blind)

#1E1B0D

Tritanopia (blue-blind)

#36040C

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310b0e;
/* rgb */ color: rgb(49, 11, 14);
/* oklch */ color: oklch(21.7% 0.062 19.3);

Tailwind

colors: {
  custom: {
    50: '#6c4c4d',
    500: '#310b0e',
    950: '#000000',
  },
}

SCSS

$custom: #310b0e;
$custom-light: #6c4c4d;
$custom-dark: #000000;

JSON

{
  "hex": "#310b0e",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 14
  },
  "hsl": {
    "h": 355.263,
    "s": 63.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.21742,
    "c": 0.06162,
    "h": 19.3
  },
  "luminance": 0.00924
}

Semantic roles & 50–950 ramp

primary

#310B0E

secondary

#2A6E68

accent

#E6D941

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310B0E

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

Preview Lab → · Contrast checker → · Palette generator →