#3B040A#3B040A

#3B040A is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.9% C 0.084 H 21.0°. Best body text is #FFFFFF at 17.39:1 contrast (WCAG AA passes).

Color values

HEX	#3B040A
RGB	rgb(59, 4, 10)
HSL	hsl(353, 87%, 12%)
HSV	hsv(353, 93%, 23%)
CMYK	cmyk(0%, 93.2%, 83.1%, 76.9%)
CIE-LAB	lab(9.31, 26.65, 10.51)
CIE-LCH	lch(9.31, 28.65, 21.53°)
OKLab	oklab(22.86% 0.0782 0.03)
OKLCH	oklch(22.86% 0.084 21)
XYZ	xyz(1.9021, 1.0389, 0.3875)
Luminance	0.0104 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B040A #043B35

analogous

#3B0425 #3B040A #3B1A04

triadic

#3B040A #0A3B04 #040A3B

tetradic

#3B040A #253B04 #043B35 #1A043B

square

#3B040A #253B04 #043B35 #1A043B

split-complementary

#3B040A #043B1A #04253B

monochromatic

#1D0205 #1D0205 #3B040A #740814 #AE0C1D

Accessibility & contrast

On white

17.39

#3B040A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#3B040A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B040A

17.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B040A	#FFFFFF	#000000	##FFFFFF
##3B040A	1.00	17.39	1.21	17.39
#FFFFFF	17.39	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15120A

Deuteranopia (green-blind)

#231E08

Tritanopia (blue-blind)

#420006

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #3b040a;
/* rgb */ color: rgb(59, 4, 10);
/* oklch */ color: oklch(22.9% 0.084 21.0);

Tailwind

colors: {
  custom: {
    50: '#764a4b',
    500: '#3b040a',
    950: '#000000',
  },
}

SCSS

$custom: #3b040a;
$custom-light: #764a4b;
$custom-dark: #000000;

JSON

{
  "hex": "#3b040a",
  "rgb": {
    "r": 59,
    "g": 4,
    "b": 10
  },
  "hsl": {
    "h": 353.455,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.22859,
    "c": 0.08379,
    "h": 21
  },
  "luminance": 0.01039
}

Semantic roles & 50–950 ramp

primary

#3B040A

secondary

#1E7D72

accent

#FDE62A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #3B040A

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

Preview Lab → · Contrast checker → · Palette generator →