#180B3A#180B3A

#180B3A is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.4% C 0.085 H 289.3°. Best body text is #FFFFFF at 18.30:1 contrast (WCAG AA passes).

Color values

HEX	#180B3A
RGB	rgb(24, 11, 58)
HSL	hsl(257, 68%, 14%)
HSV	hsv(257, 81%, 23%)
CMYK	cmyk(58.6%, 81%, 0%, 77.3%)
CIE-LAB	lab(6.68, 20.59, -27.82)
CIE-LCH	lch(6.68, 34.61, 306.51°)
OKLab	oklab(20.4% 0.0281 -0.0803)
OKLCH	oklch(20.4% 0.085 289.3)
XYZ	xyz(1.2599, 0.7390, 4.0784)
Luminance	0.0074 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180B3A #2D3A0B

analogous

#0B153A #180B3A #2F0B3A

triadic

#180B3A #3A180B #0B3A18

tetradic

#180B3A #3A0B15 #2D3A0B #0B3A2F

square

#180B3A #3A0B15 #2D3A0B #0B3A2F

split-complementary

#180B3A #3A2F0B #153A0B

monochromatic

#0B051A #0B051A #180B3A #2D156D #431FA1

Accessibility & contrast

On white

18.30

#180B3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#180B3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180B3A

18.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180B3A	#FFFFFF	#000000	##FFFFFF
##180B3A	1.00	18.30	1.15	18.30
#FFFFFF	18.30	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00163B

Deuteranopia (green-blind)

#001439

Tritanopia (blue-blind)

#0C1721

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #180b3a;
/* rgb */ color: rgb(24, 11, 58);
/* oklch */ color: oklch(20.4% 0.085 289.3);

Tailwind

colors: {
  custom: {
    50: '#594b71',
    500: '#180b3a',
    950: '#000000',
  },
}

SCSS

$custom: #180b3a;
$custom-light: #594b71;
$custom-dark: #000000;

JSON

{
  "hex": "#180b3a",
  "rgb": {
    "r": 24,
    "g": 11,
    "b": 58
  },
  "hsl": {
    "h": 256.596,
    "s": 68.116,
    "l": 13.529
  },
  "oklch": {
    "l": 0.20397,
    "c": 0.08505,
    "h": 289.3
  },
  "luminance": 0.00739
}

Semantic roles & 50–950 ramp

primary

#180B3A

secondary

#62772A

accent

#EB3DBB

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#040107

muted

#79777A

Preview Lab

Preview with #180B3A

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

Preview Lab → · Contrast checker → · Palette generator →