#310401#310401

#310401 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.4% C 0.074 H 31.5°. Best body text is #FFFFFF at 18.29:1 contrast (WCAG AA passes).

Color values

HEX	#310401
RGB	rgb(49, 4, 1)
HSL	hsl(4, 96%, 10%)
HSV	hsv(4, 98%, 19%)
CMYK	cmyk(0%, 91.8%, 98%, 80.8%)
CIE-LAB	lab(6.70, 22.19, 10.09)
CIE-LCH	lch(6.70, 24.38, 24.45°)
OKLab	oklab(20.37% 0.0631 0.0387)
OKLCH	oklch(20.37% 0.074 31.5)
XYZ	xyz(1.3157, 0.7422, 0.1027)
Luminance	0.0074 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310401 #012E31

analogous

#310116 #310401 #311C01

triadic

#310401 #013104 #040131

tetradic

#310401 #163101 #012E31 #1C0131

square

#310401 #163101 #012E31 #1C0131

split-complementary

#310401 #01311C #011631

monochromatic

#1E0201 #1E0201 #310401 #6D0902 #A90E03

Accessibility & contrast

On white

18.29

#310401 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310401 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310401

18.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310401	#FFFFFF	#000000	##FFFFFF
##310401	1.00	18.29	1.15	18.29
#FFFFFF	18.29	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#120E00

Deuteranopia (green-blind)

#1D1900

Tritanopia (blue-blind)

#370004

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310401;
/* rgb */ color: rgb(49, 4, 1);
/* oklch */ color: oklch(20.4% 0.074 31.5);

Tailwind

colors: {
  custom: {
    50: '#6d4847',
    500: '#310401',
    950: '#000000',
  },
}

SCSS

$custom: #310401;
$custom-light: #6d4847;
$custom-dark: #000000;

JSON

{
  "hex": "#310401",
  "rgb": {
    "r": 49,
    "g": 4,
    "b": 1
  },
  "hsl": {
    "h": 3.75,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.20372,
    "c": 0.07406,
    "h": 31.5
  },
  "luminance": 0.00742
}

Semantic roles & 50–950 ramp

primary

#310401

secondary

#177177

accent

#F2FF29

background

#F6F4F3

surface

#ECE6E5

border

#C7C2C1

text

#080000

muted

#7A7777

Preview Lab

Preview with #310401

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

Preview Lab → · Contrast checker → · Palette generator →