#310504#310504

#310504 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.6% C 0.072 H 27.7°. Best body text is #FFFFFF at 18.20:1 contrast (WCAG AA passes).

Color values

HEX	#310504
RGB	rgb(49, 5, 4)
HSL	hsl(1, 85%, 10%)
HSV	hsv(1, 92%, 19%)
CMYK	cmyk(0%, 89.8%, 91.8%, 80.8%)
CIE-LAB	lab(6.96, 21.91, 9.24)
CIE-LCH	lch(6.96, 23.78, 22.87°)
OKLab	oklab(20.6% 0.0634 0.0332)
OKLCH	oklch(20.6% 0.072 27.7)
XYZ	xyz(1.3430, 0.7705, 0.1928)
Luminance	0.0077 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310504 #043031

analogous

#310419 #310504 #311B04

triadic

#310504 #043105 #050431

tetradic

#310504 #193104 #043031 #1B0431

square

#310504 #193104 #043031 #1B0431

split-complementary

#310504 #04311B #041931

monochromatic

#1C0302 #1C0302 #310504 #6A0B09 #A2110D

Accessibility & contrast

On white

18.20

#310504 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310504 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310504

18.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310504	#FFFFFF	#000000	##FFFFFF
##310504	1.00	18.20	1.15	18.20
#FFFFFF	18.20	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#120F04

Deuteranopia (green-blind)

#1D1903

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310504;
/* rgb */ color: rgb(49, 5, 4);
/* oklch */ color: oklch(20.6% 0.072 27.7);

Tailwind

colors: {
  custom: {
    50: '#6d4948',
    500: '#310504',
    950: '#000000',
  },
}

SCSS

$custom: #310504;
$custom-light: #6d4948;
$custom-dark: #000000;

JSON

{
  "hex": "#310504",
  "rgb": {
    "r": 49,
    "g": 5,
    "b": 4
  },
  "hsl": {
    "h": 1.333,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.20604,
    "c": 0.07156,
    "h": 27.7
  },
  "luminance": 0.0077
}

Semantic roles & 50–950 ramp

primary

#310504

secondary

#1D7273

accent

#F7FB2D

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310504

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

Preview Lab → · Contrast checker → · Palette generator →