#310603#310603

#310603 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.7% C 0.070 H 30.3°. Best body text is #FFFFFF at 18.13:1 contrast (WCAG AA passes).

Color values

HEX	#310603
RGB	rgb(49, 6, 3)
HSL	hsl(4, 88%, 10%)
HSV	hsv(4, 94%, 19%)
CMYK	cmyk(0%, 87.8%, 93.9%, 80.8%)
CIE-LAB	lab(7.14, 21.31, 9.91)
CIE-LCH	lch(7.14, 23.50, 24.93°)
OKLab	oklab(20.74% 0.0609 0.0356)
OKLCH	oklch(20.74% 0.07 30.3)
XYZ	xyz(1.3483, 0.7900, 0.1676)
Luminance	0.0079 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310603 #032E31

analogous

#310317 #310603 #311D03

triadic

#310603 #033106 #060331

tetradic

#310603 #173103 #032E31 #1D0331

square

#310603 #173103 #032E31 #1D0331

split-complementary

#310603 #03311D #031731

monochromatic

#1D0402 #1D0402 #310603 #6B0D07 #A4140A

Accessibility & contrast

On white

18.13

#310603 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#310603 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310603

18.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310603	#FFFFFF	#000000	##FFFFFF
##310603	1.00	18.13	1.16	18.13
#FFFFFF	18.13	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131002

Deuteranopia (green-blind)

#1E1902

Tritanopia (blue-blind)

#370006

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #310603;
/* rgb */ color: rgb(49, 6, 3);
/* oklch */ color: oklch(20.7% 0.070 30.3);

Tailwind

colors: {
  custom: {
    50: '#6d4948',
    500: '#310603',
    950: '#000000',
  },
}

SCSS

$custom: #310603;
$custom-light: #6d4948;
$custom-dark: #000000;

JSON

{
  "hex": "#310603",
  "rgb": {
    "r": 49,
    "g": 6,
    "b": 3
  },
  "hsl": {
    "h": 3.913,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.2074,
    "c": 0.07048,
    "h": 30.3
  },
  "luminance": 0.0079
}

Semantic roles & 50–950 ramp

primary

#310603

secondary

#1B6F74

accent

#F1FF29

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310603

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

Preview Lab → · Contrast checker → · Palette generator →