#3B040B#3B040B

#3B040B is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.9% C 0.084 H 20.0°. Best body text is #FFFFFF at 17.38:1 contrast (WCAG AA passes).

Color values

HEX	#3B040B
RGB	rgb(59, 4, 11)
HSL	hsl(352, 87%, 12%)
HSV	hsv(352, 93%, 23%)
CMYK	cmyk(0%, 93.2%, 81.4%, 76.9%)
CIE-LAB	lab(9.33, 26.70, 10.12)
CIE-LCH	lch(9.33, 28.56, 20.75°)
OKLab	oklab(22.88% 0.0787 0.0286)
OKLCH	oklch(22.88% 0.084 20)
XYZ	xyz(1.9077, 1.0411, 0.4171)
Luminance	0.0104 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B040B #043B34

analogous

#3B0426 #3B040B #3B1904

triadic

#3B040B #0B3B04 #040B3B

tetradic

#3B040B #263B04 #043B34 #19043B

square

#3B040B #263B04 #043B34 #19043B

split-complementary

#3B040B #043B19 #04263B

monochromatic

#1D0205 #1D0205 #3B040B #740816 #AE0C20

Accessibility & contrast

On white

17.38

#3B040B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#3B040B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B040B

17.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B040B	#FFFFFF	#000000	##FFFFFF
##3B040B	1.00	17.38	1.21	17.38
#FFFFFF	17.38	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15130B

Deuteranopia (green-blind)

#221E09

Tritanopia (blue-blind)

#420007

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #3b040b;
/* rgb */ color: rgb(59, 4, 11);
/* oklch */ color: oklch(22.9% 0.084 20.0);

Tailwind

colors: {
  custom: {
    50: '#764a4b',
    500: '#3b040b',
    950: '#000000',
  },
}

SCSS

$custom: #3b040b;
$custom-light: #764a4b;
$custom-dark: #000000;

JSON

{
  "hex": "#3b040b",
  "rgb": {
    "r": 59,
    "g": 4,
    "b": 11
  },
  "hsl": {
    "h": 352.364,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.22878,
    "c": 0.08373,
    "h": 20
  },
  "luminance": 0.01041
}

Semantic roles & 50–950 ramp

primary

#3B040B

secondary

#1E7D71

accent

#FDE32A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #3B040B

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

Preview Lab → · Contrast checker → · Palette generator →