#3A040B#3A040B

#3A040B is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.7% C 0.083 H 19.7°. Best body text is #FFFFFF at 17.47:1 contrast (WCAG AA passes).

Color values

HEX	#3A040B
RGB	rgb(58, 4, 11)
HSL	hsl(352, 87%, 12%)
HSV	hsv(352, 93%, 23%)
CMYK	cmyk(0%, 93.1%, 81%, 77.3%)
CIE-LAB	lab(9.08, 26.37, 9.73)
CIE-LCH	lch(9.08, 28.10, 20.26°)
OKLab	oklab(22.65% 0.0778 0.0279)
OKLCH	oklch(22.65% 0.083 19.7)
XYZ	xyz(1.8490, 1.0108, 0.4143)
Luminance	0.0101 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A040B #043A33

analogous

#3A0426 #3A040B #3A1804

triadic

#3A040B #0B3A04 #040B3A

tetradic

#3A040B #263A04 #043A33 #18043A

square

#3A040B #263A04 #043A33 #18043A

split-complementary

#3A040B #043A18 #04263A

monochromatic

#1D0205 #1D0205 #3A040B #730816 #AD0C21

Accessibility & contrast

On white

17.47

#3A040B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#3A040B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A040B

17.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A040B	#FFFFFF	#000000	##FFFFFF
##3A040B	1.00	17.47	1.20	17.47
#FFFFFF	17.47	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14120B

Deuteranopia (green-blind)

#221E09

Tritanopia (blue-blind)

#410007

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #3a040b;
/* rgb */ color: rgb(58, 4, 11);
/* oklch */ color: oklch(22.7% 0.083 19.7);

Tailwind

colors: {
  custom: {
    50: '#754a4b',
    500: '#3a040b',
    950: '#000000',
  },
}

SCSS

$custom: #3a040b;
$custom-light: #754a4b;
$custom-dark: #000000;

JSON

{
  "hex": "#3a040b",
  "rgb": {
    "r": 58,
    "g": 4,
    "b": 11
  },
  "hsl": {
    "h": 352.222,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.22652,
    "c": 0.08261,
    "h": 19.7
  },
  "luminance": 0.01011
}

Semantic roles & 50–950 ramp

primary

#3A040B

secondary

#1E7C70

accent

#FDE22B

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #3A040B

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

Preview Lab → · Contrast checker → · Palette generator →