#180C4B#180C4B

#180C4B is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.5% C 0.108 H 282.1°. Best body text is #FFFFFF at 17.60:1 contrast (WCAG AA passes).

Color values

HEX	#180C4B
RGB	rgb(24, 12, 75)
HSL	hsl(251, 72%, 17%)
HSV	hsv(251, 84%, 29%)
CMYK	cmyk(68%, 84%, 0%, 70.6%)
CIE-LAB	lab(8.70, 26.27, -36.57)
CIE-LCH	lch(8.70, 45.03, 305.70°)
OKLab	oklab(22.46% 0.0225 -0.1055)
OKLCH	oklch(22.46% 0.108 282.1)
XYZ	xyz(1.7778, 0.9650, 6.7478)
Luminance	0.0097 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.76

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180C4B #3F4B0C

analogous

#0C1F4B #180C4B #380C4B

triadic

#180C4B #4B180C #0C4B18

tetradic

#180C4B #4B0C1F #3F4B0C #0C4B38

square

#180C4B #4B0C1F #3F4B0C #0C4B38

split-complementary

#180C4B #4B380C #1F4B0C

monochromatic

#08041A #08041A #180C4B #291480 #3A1DB5

Accessibility & contrast

On white

17.60

#180C4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#180C4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180C4B

17.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180C4B	#FFFFFF	#000000	##FFFFFF
##180C4B	1.00	17.60	1.19	17.60
#FFFFFF	17.60	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4D

Deuteranopia (green-blind)

#00174A

Tritanopia (blue-blind)

#001E2B

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #180c4b;
/* rgb */ color: rgb(24, 12, 75);
/* oklch */ color: oklch(22.5% 0.108 282.1);

Tailwind

colors: {
  custom: {
    50: '#5d4c7e',
    500: '#180c4b',
    950: '#000000',
  },
}

SCSS

$custom: #180c4b;
$custom-light: #5d4c7e;
$custom-dark: #000000;

JSON

{
  "hex": "#180c4b",
  "rgb": {
    "r": 24,
    "g": 12,
    "b": 75
  },
  "hsl": {
    "h": 251.429,
    "s": 72.414,
    "l": 17.059
  },
  "oklch": {
    "l": 0.22455,
    "c": 0.10784,
    "h": 282.1
  },
  "luminance": 0.00965
}

Semantic roles & 50–950 ramp

primary

#180C4B

secondary

#75872C

accent

#EF39CC

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #180C4B

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

Preview Lab → · Contrast checker → · Palette generator →