#3D100B#3D100B

#3D100B is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.9% C 0.072 H 29.4°. Best body text is #FFFFFF at 16.44:1 contrast (WCAG AA passes).

Color values

HEX	#3D100B
RGB	rgb(61, 16, 11)
HSL	hsl(6, 69%, 14%)
HSV	hsv(6, 82%, 24%)
CMYK	cmyk(0%, 73.8%, 82%, 76.1%)
CIE-LAB	lab(11.87, 21.71, 13.75)
CIE-LCH	lch(11.87, 25.70, 32.34°)
OKLab	oklab(24.86% 0.0626 0.0353)
OKLCH	oklch(24.86% 0.072 29.4)
XYZ	xyz(2.1704, 1.3872, 0.4700)
Luminance	0.0139 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D100B #0B383D

analogous

#3D0B1F #3D100B #3D290B

triadic

#3D100B #0B3D10 #100B3D

tetradic

#3D100B #1F3D0B #0B383D #290B3D

square

#3D100B #1F3D0B #0B383D #290B3D

split-complementary

#3D100B #0B3D29 #0B1F3D

monochromatic

#1A0705 #1A0705 #3D100B #711E14 #A52B1E

Accessibility & contrast

On white

16.44

#3D100B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#3D100B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3D100B

16.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D100B	#FFFFFF	#000000	##FFFFFF
##3D100B	1.00	16.44	1.28	16.44
#FFFFFF	16.44	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C190A

Deuteranopia (green-blind)

#28230A

Tritanopia (blue-blind)

#44050F

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #3d100b;
/* rgb */ color: rgb(61, 16, 11);
/* oklch */ color: oklch(24.9% 0.072 29.4);

Tailwind

colors: {
  custom: {
    50: '#77514b',
    500: '#3d100b',
    950: '#000000',
  },
}

SCSS

$custom: #3d100b;
$custom-light: #77514b;
$custom-dark: #000000;

JSON

{
  "hex": "#3d100b",
  "rgb": {
    "r": 61,
    "g": 16,
    "b": 11
  },
  "hsl": {
    "h": 6,
    "s": 69.444,
    "l": 14.118
  },
  "oklch": {
    "l": 0.24858,
    "c": 0.07185,
    "h": 29.4
  },
  "luminance": 0.01387
}

Semantic roles & 50–950 ramp

primary

#3D100B

secondary

#2A727A

accent

#DBEC3C

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090201

muted

#7B7877

Preview Lab

Preview with #3D100B

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

Preview Lab → · Contrast checker → · Palette generator →