#310A05#310A05

#310A05 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.4% C 0.065 H 31.5°. Best body text is #FFFFFF at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#310A05
RGB	rgb(49, 10, 5)
HSL	hsl(7, 81%, 11%)
HSV	hsv(7, 90%, 19%)
CMYK	cmyk(0%, 79.6%, 89.8%, 80.8%)
CIE-LAB	lab(7.96, 19.37, 10.29)
CIE-LCH	lch(7.96, 21.93, 27.99°)
OKLab	oklab(21.4% 0.0552 0.0338)
OKLCH	oklch(21.4% 0.065 31.5)
XYZ	xyz(1.4027, 0.8812, 0.2398)
Luminance	0.0088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A05 #052C31

analogous

#310516 #310A05 #312005

triadic

#310A05 #05310A #0A0531

tetradic

#310A05 #163105 #052C31 #200531

square

#310A05 #163105 #052C31 #200531

split-complementary

#310A05 #053120 #051631

monochromatic

#1C0603 #1C0603 #310A05 #69150B #A02110

Accessibility & contrast

On white

17.85

#310A05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A05

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A05	#FFFFFF	#000000	##FFFFFF
##310A05	1.00	17.85	1.18	17.85
#FFFFFF	17.85	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151204

Deuteranopia (green-blind)

#1F1B04

Tritanopia (blue-blind)

#370209

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #310a05;
/* rgb */ color: rgb(49, 10, 5);
/* oklch */ color: oklch(21.4% 0.065 31.5);

Tailwind

colors: {
  custom: {
    50: '#6c4b49',
    500: '#310a05',
    950: '#000000',
  },
}

SCSS

$custom: #310a05;
$custom-light: #6c4b49;
$custom-dark: #000000;

JSON

{
  "hex": "#310a05",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 5
  },
  "hsl": {
    "h": 6.818,
    "s": 81.481,
    "l": 10.588
  },
  "oklch": {
    "l": 0.21395,
    "c": 0.06469,
    "h": 31.5
  },
  "luminance": 0.00881
}

Semantic roles & 50–950 ramp

primary

#310A05

secondary

#1F6972

accent

#E1F830

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310A05

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

Preview Lab → · Contrast checker → · Palette generator →