#1F0437#1F0437

#1F0437 is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 19.9% C 0.093 H 303.0°. Best body text is #FFFFFF at 18.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F0437
RGB	rgb(31, 4, 55)
HSL	hsl(272, 86%, 12%)
HSV	hsv(272, 93%, 22%)
CMYK	cmyk(43.6%, 92.7%, 0%, 78.4%)
CIE-LAB	lab(5.91, 25.08, -26.84)
CIE-LCH	lch(5.91, 36.74, 313.06°)
OKLab	oklab(19.9% 0.0504 -0.0777)
OKLCH	oklch(19.9% 0.093 303)
XYZ	xyz(1.2979, 0.6540, 3.6715)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F0437 #1C3704

analogous

#060437 #1F0437 #370436

triadic

#1F0437 #371F04 #04371F

tetradic

#1F0437 #370604 #1C3704 #043637

square

#1F0437 #370604 #1C3704 #043637

split-complementary

#1F0437 #363704 #043706

monochromatic

#10021D #10021D #1F0437 #3F0870 #5F0CA9

Accessibility & contrast

On white

18.57

#1F0437 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#1F0437 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F0437

18.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F0437	#FFFFFF	#000000	##FFFFFF
##1F0437	1.00	18.57	1.13	18.57
#FFFFFF	18.57	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001338

Deuteranopia (green-blind)

#001336

Tritanopia (blue-blind)

#1A111D

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #1f0437;
/* rgb */ color: rgb(31, 4, 55);
/* oklch */ color: oklch(19.9% 0.093 303.0);

Tailwind

colors: {
  custom: {
    50: '#5e486e',
    500: '#1f0437',
    950: '#000000',
  },
}

SCSS

$custom: #1f0437;
$custom-light: #5e486e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f0437",
  "rgb": {
    "r": 31,
    "g": 4,
    "b": 55
  },
  "hsl": {
    "h": 271.765,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.19896,
    "c": 0.09264,
    "h": 303
  },
  "luminance": 0.00654
}

Semantic roles & 50–950 ramp

primary

#1F0437

secondary

#49791E

accent

#FD2B8E

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#040007

muted

#79777A

Preview Lab

Preview with #1F0437

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

Preview Lab → · Contrast checker → · Palette generator →