#180731#180731

#180731 is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 18.8% C 0.078 H 296.8°. Best body text is #FFFFFF at 18.86:1 contrast (WCAG AA passes).

Color values

HEX	#180731
RGB	rgb(24, 7, 49)
HSL	hsl(264, 75%, 11%)
HSV	hsv(264, 86%, 19%)
CMYK	cmyk(51%, 85.7%, 0%, 80.8%)
CIE-LAB	lab(5.13, 18.74, -23.72)
CIE-LCH	lch(5.13, 30.23, 308.31°)
OKLab	oklab(18.76% 0.0353 -0.07)
OKLCH	oklch(18.76% 0.078 296.8)
XYZ	xyz(1.0069, 0.5679, 2.9617)
Luminance	0.0057 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180731 #203107

analogous

#070B31 #180731 #2D0731

triadic

#180731 #311807 #073118

tetradic

#180731 #31070B #203107 #07312D

square

#180731 #31070B #203107 #07312D

split-complementary

#180731 #312D07 #0B3107

monochromatic

#0D041B #0D041B #180731 #320F67 #4C169C

Accessibility & contrast

On white

18.86

#180731 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#180731 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180731

18.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180731	#FFFFFF	#000000	##FFFFFF
##180731	1.00	18.86	1.11	18.86
#FFFFFF	18.86	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001132

Deuteranopia (green-blind)

#001130

Tritanopia (blue-blind)

#11111B

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #180731;
/* rgb */ color: rgb(24, 7, 49);
/* oklch */ color: oklch(18.8% 0.078 296.8);

Tailwind

colors: {
  custom: {
    50: '#574969',
    500: '#180731',
    950: '#000000',
  },
}

SCSS

$custom: #180731;
$custom-light: #574969;
$custom-dark: #000000;

JSON

{
  "hex": "#180731",
  "rgb": {
    "r": 24,
    "g": 7,
    "b": 49
  },
  "hsl": {
    "h": 264.286,
    "s": 75,
    "l": 10.98
  },
  "oklch": {
    "l": 0.18759,
    "c": 0.07838,
    "h": 296.8
  },
  "luminance": 0.00568
}

Semantic roles & 50–950 ramp

primary

#180731

secondary

#517123

accent

#F236A6

background

#F5F4F6

surface

#E9E6EB

border

#C5C2C6

text

#030106

muted

#78777A

Preview Lab

Preview with #180731

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

Preview Lab → · Contrast checker → · Palette generator →