#1F033A#1F033A

#1F033A is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.1% C 0.098 H 301.2°. Best body text is #FFFFFF at 18.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F033A
RGB	rgb(31, 3, 58)
HSL	hsl(271, 90%, 12%)
HSV	hsv(271, 95%, 23%)
CMYK	cmyk(46.6%, 94.8%, 0%, 77.3%)
CIE-LAB	lab(5.98, 26.69, -28.91)
CIE-LCH	lch(5.98, 39.34, 312.71°)
OKLab	oklab(20.06% 0.0506 -0.0837)
OKLCH	oklch(20.06% 0.098 301.2)
XYZ	xyz(1.3612, 0.6619, 4.0582)
Luminance	0.0066 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F033A #1E3A03

analogous

#03033A #1F033A #3A033A

triadic

#1F033A #3A1F03 #033A1F

tetradic

#1F033A #3A0303 #1E3A03 #033A3A

square

#1F033A #3A0303 #1E3A03 #033A3A

split-complementary

#1F033A #3A3A03 #033A03

monochromatic

#10021D #10021D #1F033A #3E0674 #5D09AE

Accessibility & contrast

On white

18.54

#1F033A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#1F033A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F033A

18.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F033A	#FFFFFF	#000000	##FFFFFF
##1F033A	1.00	18.54	1.13	18.54
#FFFFFF	18.54	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133B

Deuteranopia (green-blind)

#001339

Tritanopia (blue-blind)

#19121F

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #1f033a;
/* rgb */ color: rgb(31, 3, 58);
/* oklch */ color: oklch(20.1% 0.098 301.2);

Tailwind

colors: {
  custom: {
    50: '#5e4771',
    500: '#1f033a',
    950: '#000000',
  },
}

SCSS

$custom: #1f033a;
$custom-light: #5e4771;
$custom-dark: #000000;

JSON

{
  "hex": "#1f033a",
  "rgb": {
    "r": 31,
    "g": 3,
    "b": 58
  },
  "hsl": {
    "h": 270.545,
    "s": 90.164,
    "l": 11.961
  },
  "oklch": {
    "l": 0.20056,
    "c": 0.09781,
    "h": 301.2
  },
  "luminance": 0.00662
}

Semantic roles & 50–950 ramp

primary

#1F033A

secondary

#4C7D1C

accent

#FF2992

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#050007

muted

#79777A

Preview Lab

Preview with #1F033A

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

Preview Lab → · Contrast checker → · Palette generator →