#310307#310307

#310307 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.3% C 0.074 H 21.2°. Best body text is #FFFFFF at 18.32:1 contrast (WCAG AA passes).

Color values

HEX	#310307
RGB	rgb(49, 3, 7)
HSL	hsl(355, 88%, 10%)
HSV	hsv(355, 94%, 19%)
CMYK	cmyk(0%, 93.9%, 85.7%, 80.8%)
CIE-LAB	lab(6.63, 23.19, 7.53)
CIE-LCH	lch(6.63, 24.38, 18.00°)
OKLab	oklab(20.35% 0.0691 0.0268)
OKLCH	oklch(20.35% 0.074 21.2)
XYZ	xyz(1.3377, 0.7336, 0.2721)
Luminance	0.0073 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310307 #03312D

analogous

#31031E #310307 #311603

triadic

#310307 #073103 #030731

tetradic

#310307 #1E3103 #03312D #160331

square

#310307 #1E3103 #03312D #160331

split-complementary

#310307 #033116 #031E31

monochromatic

#1D0204 #1D0204 #310307 #6B070F #A40A17

Accessibility & contrast

On white

18.32

#310307 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310307 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310307

18.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310307	#FFFFFF	#000000	##FFFFFF
##310307	1.00	18.32	1.15	18.32
#FFFFFF	18.32	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#100E07

Deuteranopia (green-blind)

#1C1806

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310307;
/* rgb */ color: rgb(49, 3, 7);
/* oklch */ color: oklch(20.3% 0.074 21.2);

Tailwind

colors: {
  custom: {
    50: '#6d484a',
    500: '#310307',
    950: '#000000',
  },
}

SCSS

$custom: #310307;
$custom-light: #6d484a;
$custom-dark: #000000;

JSON

{
  "hex": "#310307",
  "rgb": {
    "r": 49,
    "g": 3,
    "b": 7
  },
  "hsl": {
    "h": 354.783,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20349,
    "c": 0.07415,
    "h": 21.2
  },
  "luminance": 0.00733
}

Semantic roles & 50–950 ramp

primary

#310307

secondary

#1B746D

accent

#FFEC29

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #310307

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

Preview Lab → · Contrast checker → · Palette generator →