#3B100F#3B100F

#3B100F is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.068 H 24.8°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#3B100F
RGB	rgb(59, 16, 15)
HSL	hsl(1, 59%, 15%)
HSV	hsv(1, 75%, 23%)
CMYK	cmyk(0%, 72.9%, 74.6%, 76.9%)
CIE-LAB	lab(11.52, 21.13, 11.27)
CIE-LCH	lch(11.52, 23.95, 28.08°)
OKLab	oklab(24.54% 0.062 0.0287)
OKLCH	oklch(24.54% 0.068 24.8)
XYZ	xyz(2.0754, 1.3352, 0.6003)
Luminance	0.0134 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B100F #0F3A3B

analogous

#3B0F24 #3B100F #3B260F

triadic

#3B100F #0F3B10 #100F3B

tetradic

#3B100F #243B0F #0F3A3B #260F3B

square

#3B100F #243B0F #0F3A3B #260F3B

split-complementary

#3B100F #0F3B26 #0F243B

monochromatic

#180706 #180706 #3B100F #6C1D1B #9D2A28

Accessibility & contrast

On white

16.57

#3B100F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3B100F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B100F

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B100F	#FFFFFF	#000000	##FFFFFF
##3B100F	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B190F

Deuteranopia (green-blind)

#26220E

Tritanopia (blue-blind)

#410710

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #3b100f;
/* rgb */ color: rgb(59, 16, 15);
/* oklch */ color: oklch(24.5% 0.068 24.8);

Tailwind

colors: {
  custom: {
    50: '#75514d',
    500: '#3b100f',
    950: '#000000',
  },
}

SCSS

$custom: #3b100f;
$custom-light: #75514d;
$custom-dark: #000000;

JSON

{
  "hex": "#3b100f",
  "rgb": {
    "r": 59,
    "g": 16,
    "b": 15
  },
  "hsl": {
    "h": 1.364,
    "s": 59.459,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24535,
    "c": 0.06833,
    "h": 24.8
  },
  "luminance": 0.01335
}

Semantic roles & 50–950 ramp

primary

#3B100F

secondary

#307475

accent

#DFE345

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090201

muted

#7B7877

Preview Lab

Preview with #3B100F

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

Preview Lab → · Contrast checker → · Palette generator →