#310101#310101

#310101 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 19.9% C 0.079 H 28.5°. Best body text is #FFFFFF at 18.50:1 contrast (WCAG AA passes).

Color values

HEX	#310101
RGB	rgb(49, 1, 1)
HSL	hsl(0, 96%, 10%)
HSV	hsv(0, 98%, 19%)
CMYK	cmyk(0%, 98%, 98%, 80.8%)
CIE-LAB	lab(6.12, 23.73, 9.23)
CIE-LCH	lch(6.12, 25.46, 21.26°)
OKLab	oklab(19.87% 0.0692 0.0375)
OKLCH	oklch(19.87% 0.079 28.5)
XYZ	xyz(1.2831, 0.6771, 0.0918)
Luminance	0.0068 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310101 #013131

analogous

#310119 #310101 #311901

triadic

#310101 #013101 #010131

tetradic

#310101 #193101 #013131 #190131

square

#310101 #193101 #013131 #190131

split-complementary

#310101 #013119 #011931

monochromatic

#1E0101 #1E0101 #310101 #6D0202 #A90303

Accessibility & contrast

On white

18.50

#310101 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#310101 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310101

18.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310101	#FFFFFF	#000000	##FFFFFF
##310101	1.00	18.50	1.14	18.50
#FFFFFF	18.50	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0C01

Deuteranopia (green-blind)

#1C1700

Tritanopia (blue-blind)

#370001

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #310101;
/* rgb */ color: rgb(49, 1, 1);
/* oklch */ color: oklch(19.9% 0.079 28.5);

Tailwind

colors: {
  custom: {
    50: '#6d4647',
    500: '#310101',
    950: '#000000',
  },
}

SCSS

$custom: #310101;
$custom-light: #6d4647;
$custom-dark: #000000;

JSON

{
  "hex": "#310101",
  "rgb": {
    "r": 49,
    "g": 1,
    "b": 1
  },
  "hsl": {
    "h": 0,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.19866,
    "c": 0.07866,
    "h": 28.5
  },
  "luminance": 0.00677
}

Semantic roles & 50–950 ramp

primary

#310101

secondary

#177777

accent

#FFFF29

background

#F6F4F3

surface

#ECE6E5

border

#C7C2C1

text

#080000

muted

#7A7777

Preview Lab

Preview with #310101

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

Preview Lab → · Contrast checker → · Palette generator →