#1F050B#1F050B

#1F050B is a very dark, muted red. Relative luminance 0.004; OKLCH L 16.8% C 0.047 H 7.9°. Best body text is #FFFFFF at 19.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F050B
RGB	rgb(31, 5, 11)
HSL	hsl(346, 72%, 7%)
HSV	hsv(346, 84%, 12%)
CMYK	cmyk(0%, 83.9%, 64.5%, 87.8%)
CIE-LAB	lab(3.83, 11.34, 1.42)
CIE-LCH	lch(3.83, 11.42, 7.13°)
OKLab	oklab(16.79% 0.0469 0.0065)
OKLCH	oklch(16.79% 0.047 7.9)
XYZ	xyz(0.6798, 0.4241, 0.3626)
Luminance	0.0042 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F050B #051F19

analogous

#1F0518 #1F050B #1F0C05

triadic

#1F050B #0B1F05 #050B1F

tetradic

#1F050B #181F05 #051F19 #0C051F

square

#1F050B #181F05 #051F19 #0C051F

split-complementary

#1F050B #051F0C #05181F

monochromatic

#1A0409 #1A0409 #1F050B #540E1E #881630

Accessibility & contrast

On white

19.36

#1F050B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#1F050B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F050B

19.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F050B	#FFFFFF	#000000	##FFFFFF
##1F050B	1.00	19.36	1.08	19.36
#FFFFFF	19.36	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A0A0B

Deuteranopia (green-blind)

#11100A

Tritanopia (blue-blind)

#230307

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #1f050b;
/* rgb */ color: rgb(31, 5, 11);
/* oklch */ color: oklch(16.8% 0.047 7.9);

Tailwind

colors: {
  custom: {
    50: '#5a494c',
    500: '#1f050b',
    950: '#000000',
  },
}

SCSS

$custom: #1f050b;
$custom-light: #5a494c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f050b",
  "rgb": {
    "r": 31,
    "g": 5,
    "b": 11
  },
  "hsl": {
    "h": 346.154,
    "s": 72.222,
    "l": 7.059
  },
  "oklch": {
    "l": 0.16793,
    "c": 0.0473,
    "h": 7.9
  },
  "luminance": 0.00424
}

Semantic roles & 50–950 ramp

primary

#1F050B

secondary

#206051

accent

#EFC539

background

#F5F4F4

surface

#E9E6E7

border

#C5C2C3

text

#040001

muted

#797777

Preview Lab

Preview with #1F050B

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

Preview Lab → · Contrast checker → · Palette generator →