#31010C#31010C

#31010C is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.1% C 0.078 H 12.8°. Best body text is #FFFFFF at 18.42:1 contrast (WCAG AA passes).

Color values

HEX	#31010C
RGB	rgb(49, 1, 12)
HSL	hsl(346, 96%, 10%)
HSV	hsv(346, 98%, 19%)
CMYK	cmyk(0%, 98%, 75.5%, 80.8%)
CIE-LAB	lab(6.34, 24.63, 5.02)
CIE-LCH	lch(6.34, 25.14, 11.53°)
OKLab	oklab(20.14% 0.0759 0.0173)
OKLCH	oklch(20.14% 0.078 12.8)
XYZ	xyz(1.3440, 0.7014, 0.4124)
Luminance	0.0070 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31010C #013126

analogous

#310124 #31010C #310E01

triadic

#31010C #0C3101 #010C31

tetradic

#31010C #243101 #013126 #0E0131

square

#31010C #243101 #013126 #0E0131

split-complementary

#31010C #01310E #012431

monochromatic

#1E0107 #1E0107 #31010C #6D021B #A90329

Accessibility & contrast

On white

18.42

#31010C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#31010C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31010C

18.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31010C	#FFFFFF	#000000	##FFFFFF
##31010C	1.00	18.42	1.14	18.42
#FFFFFF	18.42	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0D0C

Deuteranopia (green-blind)

#1B180B

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #31010c;
/* rgb */ color: rgb(49, 1, 12);
/* oklch */ color: oklch(20.1% 0.078 12.8);

Tailwind

colors: {
  custom: {
    50: '#6d474c',
    500: '#31010c',
    950: '#000000',
  },
}

SCSS

$custom: #31010c;
$custom-light: #6d474c;
$custom-dark: #000000;

JSON

{
  "hex": "#31010c",
  "rgb": {
    "r": 49,
    "g": 1,
    "b": 12
  },
  "hsl": {
    "h": 346.25,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.2014,
    "c": 0.07783,
    "h": 12.8
  },
  "luminance": 0.00701
}

Semantic roles & 50–950 ramp

primary

#31010C

secondary

#177761

accent

#FFCE29

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #31010C

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

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