#391004#391004

#391004 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.9% C 0.069 H 37.8°. Best body text is #FFFFFF at 16.80:1 contrast (WCAG AA passes).

Color values

HEX	#391004
RGB	rgb(57, 16, 4)
HSL	hsl(14, 87%, 12%)
HSV	hsv(14, 93%, 22%)
CMYK	cmyk(0%, 71.9%, 93%, 77.6%)
CIE-LAB	lab(10.92, 19.55, 15.16)
CIE-LCH	lch(10.92, 24.74, 37.79°)
OKLab	oklab(23.94% 0.0544 0.0422)
OKLCH	oklch(23.94% 0.069 37.8)
XYZ	xyz(1.8948, 1.2495, 0.2562)
Luminance	0.0125 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#391004 #042D39

analogous

#390413 #391004 #392B04

triadic

#391004 #043910 #100439

tetradic

#391004 #133904 #042D39 #2B0439

square

#391004 #133904 #042D39 #2B0439

split-complementary

#391004 #04392B #041339

monochromatic

#1D0802 #1D0802 #391004 #722008 #AB300C

Accessibility & contrast

On white

16.80

#391004 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#391004 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #391004

16.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##391004	#FFFFFF	#000000	##FFFFFF
##391004	1.00	16.80	1.25	16.80
#FFFFFF	16.80	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C1803

Deuteranopia (green-blind)

#262103

Tritanopia (blue-blind)

#40060D

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #391004;
/* rgb */ color: rgb(57, 16, 4);
/* oklch */ color: oklch(23.9% 0.069 37.8);

Tailwind

colors: {
  custom: {
    50: '#735048',
    500: '#391004',
    950: '#000000',
  },
}

SCSS

$custom: #391004;
$custom-light: #735048;
$custom-dark: #000000;

JSON

{
  "hex": "#391004",
  "rgb": {
    "r": 57,
    "g": 16,
    "b": 4
  },
  "hsl": {
    "h": 13.585,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.23944,
    "c": 0.06885,
    "h": 37.8
  },
  "luminance": 0.01249
}

Semantic roles & 50–950 ramp

primary

#391004

secondary

#1E667B

accent

#CDFD2B

background

#F7F4F4

surface

#EDE7E6

border

#C8C3C2

text

#090200

muted

#7B7877

Preview Lab

Preview with #391004

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

Preview Lab → · Contrast checker → · Palette generator →