#310B01#310B01

#310B01 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.5% C 0.066 H 39.1°. Best body text is #FFFFFF at 17.81:1 contrast (WCAG AA passes).

Color values

HEX	#310B01
RGB	rgb(49, 11, 1)
HSL	hsl(13, 96%, 10%)
HSV	hsv(13, 98%, 19%)
CMYK	cmyk(0%, 77.6%, 98%, 80.8%)
CIE-LAB	lab(8.08, 18.53, 12.10)
CIE-LCH	lch(8.08, 22.13, 33.15°)
OKLab	oklab(21.46% 0.0509 0.0413)
OKLCH	oklch(21.46% 0.066 39.1)
XYZ	xyz(1.3919, 0.8947, 0.1281)
Luminance	0.0089 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B01 #012731

analogous

#31010F #310B01 #312301

triadic

#310B01 #01310B #0B0131

tetradic

#310B01 #0F3101 #012731 #230131

square

#310B01 #0F3101 #012731 #230131

split-complementary

#310B01 #013123 #010F31

monochromatic

#1E0701 #1E0701 #310B01 #6D1802 #A92603

Accessibility & contrast

On white

17.81

#310B01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310B01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B01

17.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B01	#FFFFFF	#000000	##FFFFFF
##310B01	1.00	17.81	1.18	17.81
#FFFFFF	17.81	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161200

Deuteranopia (green-blind)

#201B00

Tritanopia (blue-blind)

#370208

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310b01;
/* rgb */ color: rgb(49, 11, 1);
/* oklch */ color: oklch(21.5% 0.066 39.1);

Tailwind

colors: {
  custom: {
    50: '#6c4c47',
    500: '#310b01',
    950: '#000000',
  },
}

SCSS

$custom: #310b01;
$custom-light: #6c4c47;
$custom-dark: #000000;

JSON

{
  "hex": "#310b01",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 1
  },
  "hsl": {
    "h": 12.5,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.21461,
    "c": 0.06554,
    "h": 39.1
  },
  "luminance": 0.00895
}

Semantic roles & 50–950 ramp

primary

#310B01

secondary

#176377

accent

#D2FF29

background

#F6F4F3

surface

#ECE7E5

border

#C7C3C1

text

#070100

muted

#7A7777

Preview Lab

Preview with #310B01

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

Preview Lab → · Contrast checker → · Palette generator →