#310901#310901

#310901 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.2% C 0.068 H 36.9°. Best body text is #FFFFFF at 17.95:1 contrast (WCAG AA passes).

Color values

HEX	#310901
RGB	rgb(49, 9, 1)
HSL	hsl(10, 96%, 10%)
HSV	hsv(10, 98%, 19%)
CMYK	cmyk(0%, 81.6%, 98%, 80.8%)
CIE-LAB	lab(7.68, 19.60, 11.52)
CIE-LCH	lch(7.68, 22.73, 30.45°)
OKLab	oklab(21.16% 0.0542 0.0406)
OKLCH	oklch(21.16% 0.068 36.9)
XYZ	xyz(1.3700, 0.8507, 0.1208)
Luminance	0.0085 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310901 #012931

analogous

#310111 #310901 #312101

triadic

#310901 #013109 #090131

tetradic

#310901 #113101 #012931 #210131

square

#310901 #113101 #012931 #210131

split-complementary

#310901 #013121 #011131

monochromatic

#1E0601 #1E0601 #310901 #6D1402 #A91F03

Accessibility & contrast

On white

17.95

#310901 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#310901 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310901

17.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310901	#FFFFFF	#000000	##FFFFFF
##310901	1.00	17.95	1.17	17.95
#FFFFFF	17.95	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151100

Deuteranopia (green-blind)

#1F1A00

Tritanopia (blue-blind)

#370107

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #310901;
/* rgb */ color: rgb(49, 9, 1);
/* oklch */ color: oklch(21.2% 0.068 36.9);

Tailwind

colors: {
  custom: {
    50: '#6d4b47',
    500: '#310901',
    950: '#000000',
  },
}

SCSS

$custom: #310901;
$custom-light: #6d4b47;
$custom-dark: #000000;

JSON

{
  "hex": "#310901",
  "rgb": {
    "r": 49,
    "g": 9,
    "b": 1
  },
  "hsl": {
    "h": 10,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.21159,
    "c": 0.0677,
    "h": 36.9
  },
  "luminance": 0.00851
}

Semantic roles & 50–950 ramp

primary

#310901

secondary

#176777

accent

#DBFF29

background

#F6F4F3

surface

#ECE7E5

border

#C7C3C1

text

#070100

muted

#7A7777

Preview Lab

Preview with #310901

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

Preview Lab → · Contrast checker → · Palette generator →