#31010A#31010A

#31010A is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.1% C 0.078 H 15.4°. Best body text is #FFFFFF at 18.43:1 contrast (WCAG AA passes).

Color values

HEX	#31010A
RGB	rgb(49, 1, 10)
HSL	hsl(349, 96%, 10%)
HSV	hsv(349, 98%, 19%)
CMYK	cmyk(0%, 98%, 79.6%, 80.8%)
CIE-LAB	lab(6.29, 24.46, 5.83)
CIE-LCH	lch(6.29, 25.15, 13.39°)
OKLab	oklab(20.09% 0.0749 0.0206)
OKLCH	oklch(20.09% 0.078 15.4)
XYZ	xyz(1.3324, 0.6968, 0.3514)
Luminance	0.0070 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31010A #013128

analogous

#310122 #31010A #311001

triadic

#31010A #0A3101 #010A31

tetradic

#31010A #223101 #013128 #100131

square

#31010A #223101 #013128 #100131

split-complementary

#31010A #013110 #012231

monochromatic

#1E0106 #1E0106 #31010A #6D0216 #A90322

Accessibility & contrast

On white

18.43

#31010A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#31010A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31010A

18.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31010A	#FFFFFF	#000000	##FFFFFF
##31010A	1.00	18.43	1.14	18.43
#FFFFFF	18.43	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0D0A

Deuteranopia (green-blind)

#1B1809

Tritanopia (blue-blind)

#370004

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #31010a;
/* rgb */ color: rgb(49, 1, 10);
/* oklch */ color: oklch(20.1% 0.078 15.4);

Tailwind

colors: {
  custom: {
    50: '#6d474b',
    500: '#31010a',
    950: '#000000',
  },
}

SCSS

$custom: #31010a;
$custom-light: #6d474b;
$custom-dark: #000000;

JSON

{
  "hex": "#31010a",
  "rgb": {
    "r": 49,
    "g": 1,
    "b": 10
  },
  "hsl": {
    "h": 348.75,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.20089,
    "c": 0.07768,
    "h": 15.4
  },
  "luminance": 0.00697
}

Semantic roles & 50–950 ramp

primary

#31010A

secondary

#177765

accent

#FFD729

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #31010A

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

Preview Lab → · Contrast checker → · Palette generator →