#310709#310709

#310709 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 21.0% C 0.068 H 22.4°. Best body text is #FFFFFF at 18.03:1 contrast (WCAG AA passes).

Color values

HEX	#310709
RGB	rgb(49, 7, 9)
HSL	hsl(357, 75%, 11%)
HSV	hsv(357, 86%, 19%)
CMYK	cmyk(0%, 85.7%, 81.6%, 80.8%)
CIE-LAB	lab(7.45, 21.25, 7.92)
CIE-LCH	lch(7.45, 22.68, 20.45°)
OKLab	oklab(21.03% 0.0626 0.0258)
OKLCH	oklch(21.03% 0.068 22.4)
XYZ	xyz(1.3921, 0.8249, 0.3443)
Luminance	0.0083 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310709 #07312F

analogous

#31071E #310709 #311A07

triadic

#310709 #093107 #070931

tetradic

#310709 #1E3107 #07312F #1A0731

square

#310709 #1E3107 #07312F #1A0731

split-complementary

#310709 #07311A #071E31

monochromatic

#1B0405 #1B0405 #310709 #670F13 #9C161D

Accessibility & contrast

On white

18.03

#310709 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#310709 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310709

18.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310709	#FFFFFF	#000000	##FFFFFF
##310709	1.00	18.03	1.17	18.03
#FFFFFF	18.03	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	18.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131109

Deuteranopia (green-blind)

#1D1A08

Tritanopia (blue-blind)

#370008

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #310709;
/* rgb */ color: rgb(49, 7, 9);
/* oklch */ color: oklch(21.0% 0.068 22.4);

Tailwind

colors: {
  custom: {
    50: '#6d4a4b',
    500: '#310709',
    950: '#000000',
  },
}

SCSS

$custom: #310709;
$custom-light: #6d4a4b;
$custom-dark: #000000;

JSON

{
  "hex": "#310709",
  "rgb": {
    "r": 49,
    "g": 7,
    "b": 9
  },
  "hsl": {
    "h": 357.143,
    "s": 75,
    "l": 10.98
  },
  "oklch": {
    "l": 0.2103,
    "c": 0.0677,
    "h": 22.4
  },
  "luminance": 0.00825
}

Semantic roles & 50–950 ramp

primary

#310709

secondary

#23716D

accent

#F2E936

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310709

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

Preview Lab → · Contrast checker → · Palette generator →