#310A03#310A03

#310A03 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.4% C 0.066 H 34.7°. Best body text is #FFFFFF at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#310A03
RGB	rgb(49, 10, 3)
HSL	hsl(9, 88%, 10%)
HSV	hsv(9, 94%, 19%)
CMYK	cmyk(0%, 79.6%, 93.9%, 80.8%)
CIE-LAB	lab(7.92, 19.22, 11.05)
CIE-LCH	lch(7.92, 22.17, 29.89°)
OKLab	oklab(21.35% 0.0539 0.0373)
OKLCH	oklch(21.35% 0.066 34.7)
XYZ	xyz(1.3918, 0.8768, 0.1821)
Luminance	0.0088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A03 #032A31

analogous

#310313 #310A03 #312103

triadic

#310A03 #03310A #0A0331

tetradic

#310A03 #133103 #032A31 #210331

square

#310A03 #133103 #032A31 #210331

split-complementary

#310A03 #033121 #031331

monochromatic

#1D0602 #1D0602 #310A03 #6B1607 #A4220A

Accessibility & contrast

On white

17.87

#310A03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A03

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A03	#FFFFFF	#000000	##FFFFFF
##310A03	1.00	17.87	1.18	17.87
#FFFFFF	17.87	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151202

Deuteranopia (green-blind)

#1F1B02

Tritanopia (blue-blind)

#370208

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #310a03;
/* rgb */ color: rgb(49, 10, 3);
/* oklch */ color: oklch(21.4% 0.066 34.7);

Tailwind

colors: {
  custom: {
    50: '#6c4b48',
    500: '#310a03',
    950: '#000000',
  },
}

SCSS

$custom: #310a03;
$custom-light: #6c4b48;
$custom-dark: #000000;

JSON

{
  "hex": "#310a03",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 3
  },
  "hsl": {
    "h": 9.13,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.21352,
    "c": 0.06552,
    "h": 34.7
  },
  "luminance": 0.00877
}

Semantic roles & 50–950 ramp

primary

#310A03

secondary

#1B6774

accent

#DEFF29

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310A03

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

Preview Lab → · Contrast checker → · Palette generator →