#310305#310305

#310305 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.3% C 0.074 H 24.1°. Best body text is #FFFFFF at 18.33:1 contrast (WCAG AA passes).

Color values

HEX	#310305
RGB	rgb(49, 3, 5)
HSL	hsl(357, 88%, 10%)
HSV	hsv(357, 94%, 19%)
CMYK	cmyk(0%, 93.9%, 89.8%, 80.8%)
CIE-LAB	lab(6.59, 23.03, 8.29)
CIE-LCH	lch(6.59, 24.47, 19.80°)
OKLab	oklab(20.3% 0.0679 0.0304)
OKLCH	oklch(20.3% 0.074 24.1)
XYZ	xyz(1.3267, 0.7293, 0.2145)
Luminance	0.0073 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310305 #03312F

analogous

#31031C #310305 #311803

triadic

#310305 #053103 #030531

tetradic

#310305 #1C3103 #03312F #180331

square

#310305 #1C3103 #03312F #180331

split-complementary

#310305 #033118 #031C31

monochromatic

#1D0203 #1D0203 #310305 #6B070B #A40A11

Accessibility & contrast

On white

18.33

#310305 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310305 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310305

18.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310305	#FFFFFF	#000000	##FFFFFF
##310305	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)

#100E05

Deuteranopia (green-blind)

#1C1804

Tritanopia (blue-blind)

#370004

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310305;
/* rgb */ color: rgb(49, 3, 5);
/* oklch */ color: oklch(20.3% 0.074 24.1);

Tailwind

colors: {
  custom: {
    50: '#6d4849',
    500: '#310305',
    950: '#000000',
  },
}

SCSS

$custom: #310305;
$custom-light: #6d4849;
$custom-dark: #000000;

JSON

{
  "hex": "#310305",
  "rgb": {
    "r": 49,
    "g": 3,
    "b": 5
  },
  "hsl": {
    "h": 357.391,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20302,
    "c": 0.07441,
    "h": 24.1
  },
  "luminance": 0.00729
}

Semantic roles & 50–950 ramp

primary

#310305

secondary

#1B7471

accent

#FFF529

background

#F6F4F4

surface

#ECE6E6

border

#C7C2C2

text

#070000

muted

#7A7777

Preview Lab

Preview with #310305

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

Preview Lab → · Contrast checker → · Palette generator →