#1F0400#1F0400

#1F0400 is a very dark, muted red. Relative luminance 0.004; OKLCH L 16.1% C 0.052 H 38.6°. Best body text is #FFFFFF at 19.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F0400
RGB	rgb(31, 4, 0)
HSL	hsl(8, 100%, 6%)
HSV	hsv(8, 100%, 12%)
CMYK	cmyk(0%, 87.1%, 100%, 87.8%)
CIE-LAB	lab(3.42, 10.21, 5.30)
CIE-LCH	lch(3.42, 11.50, 27.46°)
OKLab	oklab(16.15% 0.0408 0.0326)
OKLCH	oklch(16.15% 0.052 38.6)
XYZ	xyz(0.6086, 0.3782, 0.0410)
Luminance	0.0038 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F0400 #001B1F

analogous

#1F000B #1F0400 #1F1300

triadic

#1F0400 #001F04 #04001F

tetradic

#1F0400 #0B1F00 #001B1F #13001F

square

#1F0400 #0B1F00 #001B1F #13001F

split-complementary

#1F0400 #001F13 #000B1F

monochromatic

#1F0400 #1F0400 #1F0400 #5C0C00 #991400

Accessibility & contrast

On white

19.52

#1F0400 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#1F0400 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F0400

19.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F0400	#FFFFFF	#000000	##FFFFFF
##1F0400	1.00	19.52	1.08	19.52
#FFFFFF	19.52	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0800

Deuteranopia (green-blind)

#120F00

Tritanopia (blue-blind)

#230003

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #1f0400;
/* rgb */ color: rgb(31, 4, 0);
/* oklch */ color: oklch(16.1% 0.052 38.6);

Tailwind

colors: {
  custom: {
    50: '#5a4847',
    500: '#1f0400',
    950: '#000000',
  },
}

SCSS

$custom: #1f0400;
$custom-light: #5a4847;
$custom-dark: #000000;

JSON

{
  "hex": "#1f0400",
  "rgb": {
    "r": 31,
    "g": 4,
    "b": 0
  },
  "hsl": {
    "h": 7.742,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.16147,
    "c": 0.05222,
    "h": 38.6
  },
  "luminance": 0.00378
}

Semantic roles & 50–950 ramp

primary

#1F0400

secondary

#125D68

accent

#E3FF29

background

#F5F4F3

surface

#E9E6E5

border

#C5C2C1

text

#040000

muted

#797777

Preview Lab

Preview with #1F0400

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

Preview Lab → · Contrast checker → · Palette generator →