#180331#180331

#180331 is a very dark, moderate violet. Relative luminance 0.005; OKLCH L 18.0% C 0.086 H 298.9°. Best body text is #FFFFFF at 19.16:1 contrast (WCAG AA passes).

Color values

HEX	#180331
RGB	rgb(24, 3, 49)
HSL	hsl(267, 88%, 10%)
HSV	hsv(267, 94%, 19%)
CMYK	cmyk(51%, 93.9%, 0%, 80.8%)
CIE-LAB	lab(4.35, 20.51, -24.97)
CIE-LCH	lch(4.35, 32.32, 309.40°)
OKLab	oklab(17.98% 0.0415 -0.0753)
OKLCH	oklch(17.98% 0.086 298.9)
XYZ	xyz(0.9635, 0.4811, 2.9472)
Luminance	0.0048 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180331 #1C3103

analogous

#030531 #180331 #2F0331

triadic

#180331 #311803 #033118

tetradic

#180331 #310305 #1C3103 #03312F

square

#180331 #310305 #1C3103 #03312F

split-complementary

#180331 #312F03 #053103

monochromatic

#0E021D #0E021D #180331 #34076B #500AA4

Accessibility & contrast

On white

19.16

#180331 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#180331 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180331

19.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180331	#FFFFFF	#000000	##FFFFFF
##180331	1.00	19.16	1.10	19.16
#FFFFFF	19.16	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000F32

Deuteranopia (green-blind)

#000F30

Tritanopia (blue-blind)

#120F19

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #180331;
/* rgb */ color: rgb(24, 3, 49);
/* oklch */ color: oklch(18.0% 0.086 298.9);

Tailwind

colors: {
  custom: {
    50: '#574769',
    500: '#180331',
    950: '#000000',
  },
}

SCSS

$custom: #180331;
$custom-light: #574769;
$custom-dark: #000000;

JSON

{
  "hex": "#180331",
  "rgb": {
    "r": 24,
    "g": 3,
    "b": 49
  },
  "hsl": {
    "h": 267.391,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.1798,
    "c": 0.08597,
    "h": 298.9
  },
  "luminance": 0.00481
}

Semantic roles & 50–950 ramp

primary

#180331

secondary

#4C741B

accent

#FF299D

background

#F5F4F6

surface

#E9E6EB

border

#C5C2C6

text

#030006

muted

#78777A

Preview Lab

Preview with #180331

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

Preview Lab → · Contrast checker → · Palette generator →