#310304#310304

#310304 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.3% C 0.075 H 25.6°. Best body text is #FFFFFF at 18.33:1 contrast (WCAG AA passes).

Color values

HEX	#310304
RGB	rgb(49, 3, 4)
HSL	hsl(359, 88%, 10%)
HSV	hsv(359, 94%, 19%)
CMYK	cmyk(0%, 93.9%, 91.8%, 80.8%)
CIE-LAB	lab(6.57, 22.95, 8.67)
CIE-LCH	lch(6.57, 24.53, 20.69°)
OKLab	oklab(20.28% 0.0673 0.0322)
OKLCH	oklch(20.28% 0.075 25.6)
XYZ	xyz(1.3213, 0.7271, 0.1856)
Luminance	0.0073 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310304 #033130

analogous

#31031B #310304 #311903

triadic

#310304 #043103 #030431

tetradic

#310304 #1B3103 #033130 #190331

square

#310304 #1B3103 #033130 #190331

split-complementary

#310304 #033119 #031B31

monochromatic

#1D0202 #1D0202 #310304 #6B0709 #A40A0D

Accessibility & contrast

On white

18.33

#310304 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310304 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310304

18.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310304	#FFFFFF	#000000	##FFFFFF
##310304	1.00	18.33	1.15	18.33
#FFFFFF	18.33	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#100E04

Deuteranopia (green-blind)

#1C1803

Tritanopia (blue-blind)

#370004

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310304;
/* rgb */ color: rgb(49, 3, 4);
/* oklch */ color: oklch(20.3% 0.075 25.6);

Tailwind

colors: {
  custom: {
    50: '#6d4848',
    500: '#310304',
    950: '#000000',
  },
}

SCSS

$custom: #310304;
$custom-light: #6d4848;
$custom-dark: #000000;

JSON

{
  "hex": "#310304",
  "rgb": {
    "r": 49,
    "g": 3,
    "b": 4
  },
  "hsl": {
    "h": 358.696,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20278,
    "c": 0.0746,
    "h": 25.6
  },
  "luminance": 0.00727
}

Semantic roles & 50–950 ramp

primary

#310304

secondary

#1B7472

accent

#FFFA29

background

#F6F4F4

surface

#ECE6E6

border

#C7C2C2

text

#070000

muted

#7A7777

Preview Lab

Preview with #310304

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

Preview Lab → · Contrast checker → · Palette generator →