#310503#310503

#310503 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.6% C 0.072 H 29.2°. Best body text is #FFFFFF at 18.20:1 contrast (WCAG AA passes).

Color values

HEX	#310503
RGB	rgb(49, 5, 3)
HSL	hsl(3, 88%, 10%)
HSV	hsv(3, 94%, 19%)
CMYK	cmyk(0%, 89.8%, 93.9%, 80.8%)
CIE-LAB	lab(6.94, 21.83, 9.62)
CIE-LCH	lch(6.94, 23.86, 23.78°)
OKLab	oklab(20.58% 0.0627 0.0351)
OKLCH	oklch(20.58% 0.072 29.2)
XYZ	xyz(1.3375, 0.7683, 0.1640)
Luminance	0.0077 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310503 #032F31

analogous

#310318 #310503 #311C03

triadic

#310503 #033105 #050331

tetradic

#310503 #183103 #032F31 #1C0331

square

#310503 #183103 #032F31 #1C0331

split-complementary

#310503 #03311C #031831

monochromatic

#1D0302 #1D0302 #310503 #6B0B07 #A4110A

Accessibility & contrast

On white

18.20

#310503 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310503 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310503

18.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310503	#FFFFFF	#000000	##FFFFFF
##310503	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)

#120F03

Deuteranopia (green-blind)

#1D1902

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310503;
/* rgb */ color: rgb(49, 5, 3);
/* oklch */ color: oklch(20.6% 0.072 29.2);

Tailwind

colors: {
  custom: {
    50: '#6d4948',
    500: '#310503',
    950: '#000000',
  },
}

SCSS

$custom: #310503;
$custom-light: #6d4948;
$custom-dark: #000000;

JSON

{
  "hex": "#310503",
  "rgb": {
    "r": 49,
    "g": 5,
    "b": 3
  },
  "hsl": {
    "h": 2.609,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20581,
    "c": 0.07187,
    "h": 29.2
  },
  "luminance": 0.00768
}

Semantic roles & 50–950 ramp

primary

#310503

secondary

#1B7174

accent

#F5FF29

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310503

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

Preview Lab → · Contrast checker → · Palette generator →