#18184D#18184D

#18184D is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.8% C 0.095 H 276.9°. Best body text is #FFFFFF at 16.45:1 contrast (WCAG AA passes).

Color values

HEX	#18184D
RGB	rgb(24, 24, 77)
HSL	hsl(240, 52%, 20%)
HSV	hsv(240, 69%, 30%)
CMYK	cmyk(68.8%, 68.8%, 0%, 69.8%)
CIE-LAB	lab(11.84, 18.99, -32.79)
CIE-LCH	lch(11.84, 37.89, 300.07°)
OKLab	oklab(24.78% 0.0114 -0.0944)
OKLCH	oklch(24.78% 0.095 276.9)
XYZ	xyz(2.0424, 1.3831, 7.1791)
Luminance	0.0138 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.83

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18184D #4D4D18

analogous

#18334D #18184D #33184D

triadic

#18184D #4D1818 #184D18

tetradic

#18184D #4D1833 #4D4D18 #184D33

square

#18184D #4D1833 #4D4D18 #184D33

split-complementary

#18184D #4D3318 #334D18

monochromatic

#070717 #09091E #18184D #27277C #3535AA

Accessibility & contrast

On white

16.45

#18184D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#18184D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18184D

16.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18184D	#FFFFFF	#000000	##FFFFFF
##18184D	1.00	16.45	1.28	16.45
#FFFFFF	16.45	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00214F

Deuteranopia (green-blind)

#001D4C

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #18184d;
/* rgb */ color: rgb(24, 24, 77);
/* oklch */ color: oklch(24.8% 0.095 276.9);

Tailwind

colors: {
  custom: {
    50: '#5c557f',
    500: '#18184d',
    950: '#000000',
  },
}

SCSS

$custom: #18184d;
$custom-light: #5c557f;
$custom-dark: #000000;

JSON

{
  "hex": "#18184d",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 77
  },
  "hsl": {
    "h": 240,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.24781,
    "c": 0.09511,
    "h": 276.9
  },
  "luminance": 0.01383
}

Semantic roles & 50–950 ramp

primary

#18184D

secondary

#84843D

accent

#DC4CDC

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #18184D

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

Preview Lab → · Contrast checker → · Palette generator →