#3D101B#3D101B

#3D101B is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.2% C 0.071 H 8.9°. Best body text is #FFFFFF at 16.30:1 contrast (WCAG AA passes).

Color values

HEX	#3D101B
RGB	rgb(61, 16, 27)
HSL	hsl(345, 58%, 15%)
HSV	hsv(345, 74%, 24%)
CMYK	cmyk(0%, 73.8%, 55.7%, 76.1%)
CIE-LAB	lab(12.24, 23.08, 4.25)
CIE-LCH	lch(12.24, 23.47, 10.44°)
OKLab	oklab(25.25% 0.0701 0.011)
OKLCH	oklch(25.25% 0.071 8.9)
XYZ	xyz(2.3078, 1.4421, 1.1935)
Luminance	0.0144 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D101B #103D32

analogous

#3D1032 #3D101B #3D1B10

triadic

#3D101B #1B3D10 #101B3D

tetradic

#3D101B #323D10 #103D32 #1B103D

square

#3D101B #323D10 #103D32 #1B103D

split-complementary

#3D101B #103D1B #10323D

monochromatic

#18060B #18060B #3D101B #6D1D30 #9E2946

Accessibility & contrast

On white

16.30

#3D101B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#3D101B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3D101B

16.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D101B	#FFFFFF	#000000	##FFFFFF
##3D101B	1.00	16.30	1.29	16.30
#FFFFFF	16.30	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A1A1B

Deuteranopia (green-blind)

#26231A

Tritanopia (blue-blind)

#430914

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #3d101b;
/* rgb */ color: rgb(61, 16, 27);
/* oklch */ color: oklch(25.2% 0.071 8.9);

Tailwind

colors: {
  custom: {
    50: '#765157',
    500: '#3d101b',
    950: '#000000',
  },
}

SCSS

$custom: #3d101b;
$custom-light: #765157;
$custom-dark: #000000;

JSON

{
  "hex": "#3d101b",
  "rgb": {
    "r": 61,
    "g": 16,
    "b": 27
  },
  "hsl": {
    "h": 345.333,
    "s": 58.442,
    "l": 15.098
  },
  "oklch": {
    "l": 0.25247,
    "c": 0.07099,
    "h": 8.9
  },
  "luminance": 0.01442
}

Semantic roles & 50–950 ramp

primary

#3D101B

secondary

#327766

accent

#E2BC46

background

#F7F4F5

surface

#EDE7E9

border

#C8C3C5

text

#090203

muted

#7B7878

Preview Lab

Preview with #3D101B

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

Preview Lab → · Contrast checker → · Palette generator →