#31040F#31040F

#31040F is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.7% C 0.073 H 11.3°. Best body text is #FFFFFF at 18.18:1 contrast (WCAG AA passes).

Color values

HEX	#31040F
RGB	rgb(49, 4, 15)
HSL	hsl(345, 85%, 10%)
HSV	hsv(345, 92%, 19%)
CMYK	cmyk(0%, 91.8%, 69.4%, 80.8%)
CIE-LAB	lab(7.00, 23.34, 4.51)
CIE-LCH	lch(7.00, 23.77, 10.94°)
OKLab	oklab(20.72% 0.0712 0.0143)
OKLCH	oklch(20.72% 0.073 11.3)
XYZ	xyz(1.3964, 0.7745, 0.5278)
Luminance	0.0077 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31040F #043126

analogous

#310425 #31040F #310F04

triadic

#31040F #0F3104 #040F31

tetradic

#31040F #253104 #043126 #0F0431

square

#31040F #253104 #043126 #0F0431

split-complementary

#31040F #04310F #042531

monochromatic

#1C0209 #1C0209 #31040F #6A0920 #A20D32

Accessibility & contrast

On white

18.18

#31040F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#31040F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31040F

18.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31040F	#FFFFFF	#000000	##FFFFFF
##31040F	1.00	18.18	1.15	18.18
#FFFFFF	18.18	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0F0F

Deuteranopia (green-blind)

#1B190E

Tritanopia (blue-blind)

#370008

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #31040f;
/* rgb */ color: rgb(49, 4, 15);
/* oklch */ color: oklch(20.7% 0.073 11.3);

Tailwind

colors: {
  custom: {
    50: '#6d484e',
    500: '#31040f',
    950: '#000000',
  },
}

SCSS

$custom: #31040f;
$custom-light: #6d484e;
$custom-dark: #000000;

JSON

{
  "hex": "#31040f",
  "rgb": {
    "r": 49,
    "g": 4,
    "b": 15
  },
  "hsl": {
    "h": 345.333,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.20715,
    "c": 0.07262,
    "h": 11.3
  },
  "luminance": 0.00774
}

Semantic roles & 50–950 ramp

primary

#31040F

secondary

#1D735E

accent

#FBC92D

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #31040F

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

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