#3B100D#3B100D

#3B100D is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.069 H 27.3°. Best body text is #FFFFFF at 16.59:1 contrast (WCAG AA passes).

Color values

HEX	#3B100D
RGB	rgb(59, 16, 13)
HSL	hsl(4, 64%, 14%)
HSV	hsv(4, 78%, 23%)
CMYK	cmyk(0%, 72.9%, 78%, 76.9%)
CIE-LAB	lab(11.48, 20.99, 12.23)
CIE-LCH	lch(11.48, 24.29, 30.23°)
OKLab	oklab(24.5% 0.0611 0.0315)
OKLCH	oklch(24.5% 0.069 27.3)
XYZ	xyz(2.0618, 1.3297, 0.5288)
Luminance	0.0133 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B100D #0D383B

analogous

#3B0D21 #3B100D #3B270D

triadic

#3B100D #0D3B10 #100D3B

tetradic

#3B100D #213B0D #0D383B #270D3B

square

#3B100D #213B0D #0D383B #270D3B

split-complementary

#3B100D #0D3B27 #0D213B

monochromatic

#190706 #190706 #3B100D #6D1E18 #9F2B23

Accessibility & contrast

On white

16.59

#3B100D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3B100D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B100D

16.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B100D	#FFFFFF	#000000	##FFFFFF
##3B100D	1.00	16.59	1.27	16.59
#FFFFFF	16.59	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C190C

Deuteranopia (green-blind)

#26220C

Tritanopia (blue-blind)

#420710

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3b100d;
/* rgb */ color: rgb(59, 16, 13);
/* oklch */ color: oklch(24.5% 0.069 27.3);

Tailwind

colors: {
  custom: {
    50: '#75504c',
    500: '#3b100d',
    950: '#000000',
  },
}

SCSS

$custom: #3b100d;
$custom-light: #75504c;
$custom-dark: #000000;

JSON

{
  "hex": "#3b100d",
  "rgb": {
    "r": 59,
    "g": 16,
    "b": 13
  },
  "hsl": {
    "h": 3.913,
    "s": 63.889,
    "l": 14.118
  },
  "oklch": {
    "l": 0.24495,
    "c": 0.06872,
    "h": 27.3
  },
  "luminance": 0.01329
}

Semantic roles & 50–950 ramp

primary

#3B100D

secondary

#2D7277

accent

#DCE741

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090201

muted

#7B7877

Preview Lab

Preview with #3B100D

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

Preview Lab → · Contrast checker → · Palette generator →