#18184A#18184A

#18184A is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.5% C 0.090 H 277.4°. Best body text is #FFFFFF at 16.56:1 contrast (WCAG AA passes).

Color values

HEX	#18184A
RGB	rgb(24, 24, 74)
HSL	hsl(240, 51%, 19%)
HSV	hsv(240, 68%, 29%)
CMYK	cmyk(67.6%, 67.6%, 0%, 71%)
CIE-LAB	lab(11.56, 17.81, -31.17)
CIE-LCH	lch(11.56, 35.90, 299.74°)
OKLab	oklab(24.49% 0.0116 -0.0897)
OKLCH	oklch(24.49% 0.09 277.4)
XYZ	xyz(1.9390, 1.3417, 6.6340)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18184A #4A4A18

analogous

#18314A #18184A #31184A

triadic

#18184A #4A1818 #184A18

tetradic

#18184A #4A1831 #4A4A18 #184A31

square

#18184A #4A1831 #4A4A18 #184A31

split-complementary

#18184A #4A3118 #314A18

monochromatic

#070717 #09091C #18184A #272778 #3636A6

Accessibility & contrast

On white

16.56

#18184A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#18184A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18184A

16.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18184A	#FFFFFF	#000000	##FFFFFF
##18184A	1.00	16.56	1.27	16.56
#FFFFFF	16.56	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00214C

Deuteranopia (green-blind)

#001D49

Tritanopia (blue-blind)

#00242E

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #18184a;
/* rgb */ color: rgb(24, 24, 74);
/* oklch */ color: oklch(24.5% 0.090 277.4);

Tailwind

colors: {
  custom: {
    50: '#5c547d',
    500: '#18184a',
    950: '#000000',
  },
}

SCSS

$custom: #18184a;
$custom-light: #5c547d;
$custom-dark: #000000;

JSON

{
  "hex": "#18184a",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 74
  },
  "hsl": {
    "h": 240,
    "s": 51.02,
    "l": 19.216
  },
  "oklch": {
    "l": 0.24487,
    "c": 0.09043,
    "h": 277.4
  },
  "luminance": 0.01342
}

Semantic roles & 50–950 ramp

primary

#18184A

secondary

#81813D

accent

#DA4DDA

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #18184A

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

Preview Lab → · Contrast checker → · Palette generator →