#39040D#39040D

#39040D is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.5% C 0.081 H 17.2°. Best body text is #FFFFFF at 17.54:1 contrast (WCAG AA passes).

Color values

HEX	#39040D
RGB	rgb(57, 4, 13)
HSL	hsl(350, 87%, 12%)
HSV	hsv(350, 93%, 22%)
CMYK	cmyk(0%, 93%, 77.2%, 77.6%)
CIE-LAB	lab(8.87, 26.15, 8.49)
CIE-LCH	lch(8.87, 27.49, 17.99°)
OKLab	oklab(22.47% 0.0778 0.0242)
OKLCH	oklch(22.47% 0.081 17.2)
XYZ	xyz(1.8036, 0.9860, 0.4760)
Luminance	0.0099 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#39040D #043930

analogous

#390428 #39040D #391604

triadic

#39040D #0D3904 #040D39

tetradic

#39040D #283904 #043930 #160439

square

#39040D #283904 #043930 #160439

split-complementary

#39040D #043916 #042839

monochromatic

#1D0207 #1D0207 #39040D #72081A #AB0C27

Accessibility & contrast

On white

17.54

#39040D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#39040D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #39040D

17.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##39040D	#FFFFFF	#000000	##FFFFFF
##39040D	1.00	17.54	1.20	17.54
#FFFFFF	17.54	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13120D

Deuteranopia (green-blind)

#211D0B

Tritanopia (blue-blind)

#400007

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #39040d;
/* rgb */ color: rgb(57, 4, 13);
/* oklch */ color: oklch(22.5% 0.081 17.2);

Tailwind

colors: {
  custom: {
    50: '#744a4c',
    500: '#39040d',
    950: '#000000',
  },
}

SCSS

$custom: #39040d;
$custom-light: #744a4c;
$custom-dark: #000000;

JSON

{
  "hex": "#39040d",
  "rgb": {
    "r": 57,
    "g": 4,
    "b": 13
  },
  "hsl": {
    "h": 349.811,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.22468,
    "c": 0.08145,
    "h": 17.2
  },
  "luminance": 0.00986
}

Semantic roles & 50–950 ramp

primary

#39040D

secondary

#1E7B6B

accent

#FDD92B

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #39040D

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

Preview Lab → · Contrast checker → · Palette generator →