#3B100C#3B100C

#3B100C is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.069 H 28.4°. Best body text is #FFFFFF at 16.60:1 contrast (WCAG AA passes).

Color values

HEX	#3B100C
RGB	rgb(59, 16, 12)
HSL	hsl(5, 66%, 14%)
HSV	hsv(5, 80%, 23%)
CMYK	cmyk(0%, 72.9%, 79.7%, 76.9%)
CIE-LAB	lab(11.46, 20.92, 12.68)
CIE-LCH	lch(11.46, 24.46, 31.21°)
OKLab	oklab(24.48% 0.0606 0.0328)
OKLCH	oklch(24.48% 0.069 28.4)
XYZ	xyz(2.0555, 1.3272, 0.4957)
Luminance	0.0133 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B100C #0C373B

analogous

#3B0C20 #3B100C #3B280C

triadic

#3B100C #0C3B10 #100C3B

tetradic

#3B100C #203B0C #0C373B #280C3B

square

#3B100C #203B0C #0C373B #280C3B

split-complementary

#3B100C #0C3B28 #0C203B

monochromatic

#190705 #190705 #3B100C #6E1E16 #A12C21

Accessibility & contrast

On white

16.60

#3B100C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3B100C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B100C

16.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B100C	#FFFFFF	#000000	##FFFFFF
##3B100C	1.00	16.60	1.27	16.60
#FFFFFF	16.60	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C190B

Deuteranopia (green-blind)

#26220B

Tritanopia (blue-blind)

#42060F

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3b100c;
/* rgb */ color: rgb(59, 16, 12);
/* oklch */ color: oklch(24.5% 0.069 28.4);

Tailwind

colors: {
  custom: {
    50: '#75504c',
    500: '#3b100c',
    950: '#000000',
  },
}

SCSS

$custom: #3b100c;
$custom-light: #75504c;
$custom-dark: #000000;

JSON

{
  "hex": "#3b100c",
  "rgb": {
    "r": 59,
    "g": 16,
    "b": 12
  },
  "hsl": {
    "h": 5.106,
    "s": 66.197,
    "l": 13.922
  },
  "oklch": {
    "l": 0.24477,
    "c": 0.06894,
    "h": 28.4
  },
  "luminance": 0.01327
}

Semantic roles & 50–950 ramp

primary

#3B100C

secondary

#2C7177

accent

#DBE93F

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090201

muted

#7B7877

Preview Lab

Preview with #3B100C

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

Preview Lab → · Contrast checker → · Palette generator →