#39040B#39040B

#39040B is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.4% C 0.081 H 19.4°. Best body text is #FFFFFF at 17.56:1 contrast (WCAG AA passes).

Color values

HEX	#39040B
RGB	rgb(57, 4, 11)
HSL	hsl(352, 87%, 12%)
HSV	hsv(352, 93%, 22%)
CMYK	cmyk(0%, 93%, 80.7%, 77.6%)
CIE-LAB	lab(8.83, 26.02, 9.34)
CIE-LCH	lch(8.83, 27.65, 19.75°)
OKLab	oklab(22.43% 0.0769 0.0271)
OKLCH	oklch(22.43% 0.081 19.4)
XYZ	xyz(1.7914, 0.9811, 0.4116)
Luminance	0.0098 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#39040B #043932

analogous

#390426 #39040B #391804

triadic

#39040B #0B3904 #040B39

tetradic

#39040B #263904 #043932 #180439

square

#39040B #263904 #043932 #180439

split-complementary

#39040B #043918 #042639

monochromatic

#1D0206 #1D0206 #39040B #720816 #AB0C21

Accessibility & contrast

On white

17.56

#39040B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#39040B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #39040B

17.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##39040B	#FFFFFF	#000000	##FFFFFF
##39040B	1.00	17.56	1.20	17.56
#FFFFFF	17.56	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14120B

Deuteranopia (green-blind)

#211D09

Tritanopia (blue-blind)

#400007

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #39040b;
/* rgb */ color: rgb(57, 4, 11);
/* oklch */ color: oklch(22.4% 0.081 19.4);

Tailwind

colors: {
  custom: {
    50: '#744a4b',
    500: '#39040b',
    950: '#000000',
  },
}

SCSS

$custom: #39040b;
$custom-light: #744a4b;
$custom-dark: #000000;

JSON

{
  "hex": "#39040b",
  "rgb": {
    "r": 57,
    "g": 4,
    "b": 11
  },
  "hsl": {
    "h": 352.075,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.22425,
    "c": 0.08149,
    "h": 19.4
  },
  "luminance": 0.00981
}

Semantic roles & 50–950 ramp

primary

#39040B

secondary

#1E7B6F

accent

#FDE12B

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #39040B

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

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