#1F043B#1F043B

#1F043B is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.3% C 0.097 H 300.1°. Best body text is #FFFFFF at 18.44:1 contrast (WCAG AA passes).

Color values

HEX	#1F043B
RGB	rgb(31, 4, 59)
HSL	hsl(269, 87%, 12%)
HSV	hsv(269, 93%, 23%)
CMYK	cmyk(47.5%, 93.2%, 0%, 76.9%)
CIE-LAB	lab(6.27, 26.52, -29.17)
CIE-LCH	lch(6.27, 39.42, 312.27°)
OKLab	oklab(20.33% 0.0489 -0.0842)
OKLCH	oklch(20.33% 0.097 300.1)
XYZ	xyz(1.3977, 0.6939, 4.1971)
Luminance	0.0069 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F043B #203B04

analogous

#04043B #1F043B #3B043B

triadic

#1F043B #3B1F04 #043B1F

tetradic

#1F043B #3B0404 #203B04 #043B3B

square

#1F043B #3B0404 #203B04 #043B3B

split-complementary

#1F043B #3B3B04 #043B04

monochromatic

#0F021D #0F021D #1F043B #3D0874 #5B0CAE

Accessibility & contrast

On white

18.44

#1F043B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#1F043B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F043B

18.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F043B	#FFFFFF	#000000	##FFFFFF
##1F043B	1.00	18.44	1.14	18.44
#FFFFFF	18.44	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00143C

Deuteranopia (green-blind)

#00133A

Tritanopia (blue-blind)

#181320

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #1f043b;
/* rgb */ color: rgb(31, 4, 59);
/* oklch */ color: oklch(20.3% 0.097 300.1);

Tailwind

colors: {
  custom: {
    50: '#5e4871',
    500: '#1f043b',
    950: '#000000',
  },
}

SCSS

$custom: #1f043b;
$custom-light: #5e4871;
$custom-dark: #000000;

JSON

{
  "hex": "#1f043b",
  "rgb": {
    "r": 31,
    "g": 4,
    "b": 59
  },
  "hsl": {
    "h": 269.455,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.20328,
    "c": 0.09731,
    "h": 300.1
  },
  "luminance": 0.00694
}

Semantic roles & 50–950 ramp

primary

#1F043B

secondary

#4E7D1E

accent

#FD2A96

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#050008

muted

#79777B

Preview Lab

Preview with #1F043B

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

Preview Lab → · Contrast checker → · Palette generator →