#1F0004#1F0004

#1F0004 is a very dark, moderate red. Relative luminance 0.003; OKLCH L 15.2% C 0.061 H 15.7°. Best body text is #FFFFFF at 19.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F0004
RGB	rgb(31, 0, 4)
HSL	hsl(352, 100%, 6%)
HSV	hsv(352, 100%, 12%)
CMYK	cmyk(0%, 100%, 87.1%, 87.8%)
CIE-LAB	lab(2.71, 12.36, 2.65)
CIE-LCH	lch(2.71, 12.64, 12.08°)
OKLab	oklab(15.2% 0.0585 0.0165)
OKLCH	oklch(15.2% 0.061 15.7)
XYZ	xyz(0.5871, 0.3002, 0.1419)
Luminance	0.0030 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F0004 #001F1B

analogous

#1F0013 #1F0004 #1F0B00

triadic

#1F0004 #041F00 #00041F

tetradic

#1F0004 #131F00 #001F1B #0B001F

square

#1F0004 #131F00 #001F1B #0B001F

split-complementary

#1F0004 #001F0B #00131F

monochromatic

#1F0004 #1F0004 #1F0004 #5C000C #990014

Accessibility & contrast

On white

19.81

#1F0004 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#1F0004 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F0004

19.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F0004	#FFFFFF	#000000	##FFFFFF
##1F0004	1.00	19.81	1.06	19.81
#FFFFFF	19.81	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#060604

Deuteranopia (green-blind)

#0F0D03

Tritanopia (blue-blind)

#230001

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #1f0004;
/* rgb */ color: rgb(31, 0, 4);
/* oklch */ color: oklch(15.2% 0.061 15.7);

Tailwind

colors: {
  custom: {
    50: '#5a4648',
    500: '#1f0004',
    950: '#000000',
  },
}

SCSS

$custom: #1f0004;
$custom-light: #5a4648;
$custom-dark: #000000;

JSON

{
  "hex": "#1f0004",
  "rgb": {
    "r": 31,
    "g": 0,
    "b": 4
  },
  "hsl": {
    "h": 352.258,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.152,
    "c": 0.06079,
    "h": 15.7
  },
  "luminance": 0.003
}

Semantic roles & 50–950 ramp

primary

#1F0004

secondary

#12685D

accent

#FFE329

background

#F5F3F4

surface

#E9E5E6

border

#C5C1C2

text

#040000

muted

#797777

Preview Lab

Preview with #1F0004

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

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