#1F023B#1F023B

#1F023B is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 20.0% C 0.101 H 300.8°. Best body text is #FFFFFF at 18.58:1 contrast (WCAG AA passes).

Color values

HEX	#1F023B
RGB	rgb(31, 2, 59)
HSL	hsl(271, 93%, 12%)
HSV	hsv(271, 97%, 23%)
CMYK	cmyk(47.5%, 96.6%, 0%, 76.9%)
CIE-LAB	lab(5.88, 27.57, -29.80)
CIE-LCH	lch(5.88, 40.60, 312.77°)
OKLab	oklab(20% 0.0516 -0.0864)
OKLCH	oklch(20% 0.101 300.8)
XYZ	xyz(1.3760, 0.6505, 4.1899)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F023B #1E3B02

analogous

#02023B #1F023B #3B023B

triadic

#1F023B #3B1F02 #023B1F

tetradic

#1F023B #3B0202 #1E3B02 #023B3B

square

#1F023B #3B0202 #1E3B02 #023B3B

split-complementary

#1F023B #3B3B02 #023B02

monochromatic

#10011E #10011E #1F023B #3E0476 #5D06B1

Accessibility & contrast

On white

18.58

#1F023B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#1F023B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F023B

18.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F023B	#FFFFFF	#000000	##FFFFFF
##1F023B	1.00	18.58	1.13	18.58
#FFFFFF	18.58	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133D

Deuteranopia (green-blind)

#00133A

Tritanopia (blue-blind)

#18121F

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #1f023b;
/* rgb */ color: rgb(31, 2, 59);
/* oklch */ color: oklch(20.0% 0.101 300.8);

Tailwind

colors: {
  custom: {
    50: '#5f4771',
    500: '#1f023b',
    950: '#000000',
  },
}

SCSS

$custom: #1f023b;
$custom-light: #5f4771;
$custom-dark: #000000;

JSON

{
  "hex": "#1f023b",
  "rgb": {
    "r": 31,
    "g": 2,
    "b": 59
  },
  "hsl": {
    "h": 270.526,
    "s": 93.443,
    "l": 11.961
  },
  "oklch": {
    "l": 0.20004,
    "c": 0.10062,
    "h": 300.8
  },
  "luminance": 0.0065
}

Semantic roles & 50–950 ramp

primary

#1F023B

secondary

#4C7E1A

accent

#FF2992

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#050008

muted

#79777B

Preview Lab

Preview with #1F023B

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

Preview Lab → · Contrast checker → · Palette generator →