#1F043A#1F043A

#1F043A is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.2% C 0.096 H 300.8°. Best body text is #FFFFFF at 18.47:1 contrast (WCAG AA passes).

Color values

HEX	#1F043A
RGB	rgb(31, 4, 58)
HSL	hsl(270, 87%, 12%)
HSV	hsv(270, 93%, 23%)
CMYK	cmyk(46.6%, 93.1%, 0%, 77.3%)
CIE-LAB	lab(6.17, 26.16, -28.59)
CIE-LCH	lch(6.17, 38.76, 312.46°)
OKLab	oklab(20.22% 0.0493 -0.0826)
OKLCH	oklch(20.22% 0.096 300.8)
XYZ	xyz(1.3720, 0.6836, 4.0618)
Luminance	0.0068 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F043A #1F3A04

analogous

#04043A #1F043A #3A043A

triadic

#1F043A #3A1F04 #043A1F

tetradic

#1F043A #3A0404 #1F3A04 #043A3A

square

#1F043A #3A0404 #1F3A04 #043A3A

split-complementary

#1F043A #3A3A04 #043A04

monochromatic

#0F021D #0F021D #1F043A #3E0873 #5C0CAD

Accessibility & contrast

On white

18.47

#1F043A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#1F043A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F043A

18.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F043A	#FFFFFF	#000000	##FFFFFF
##1F043A	1.00	18.47	1.14	18.47
#FFFFFF	18.47	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133B

Deuteranopia (green-blind)

#001339

Tritanopia (blue-blind)

#19131F

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #1f043a;
/* rgb */ color: rgb(31, 4, 58);
/* oklch */ color: oklch(20.2% 0.096 300.8);

Tailwind

colors: {
  custom: {
    50: '#5e4871',
    500: '#1f043a',
    950: '#000000',
  },
}

SCSS

$custom: #1f043a;
$custom-light: #5e4871;
$custom-dark: #000000;

JSON

{
  "hex": "#1f043a",
  "rgb": {
    "r": 31,
    "g": 4,
    "b": 58
  },
  "hsl": {
    "h": 270,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.20219,
    "c": 0.09614,
    "h": 300.8
  },
  "luminance": 0.00684
}

Semantic roles & 50–950 ramp

primary

#1F043A

secondary

#4D7C1E

accent

#FD2B94

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#050007

muted

#79777A

Preview Lab

Preview with #1F043A

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

Preview Lab → · Contrast checker → · Palette generator →