#181536#181536

#181536 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.0% C 0.062 H 284.2°. Best body text is #FFFFFF at 17.51:1 contrast (WCAG AA passes).

Color values

HEX	#181536
RGB	rgb(24, 21, 54)
HSL	hsl(245, 44%, 15%)
HSV	hsv(245, 61%, 21%)
CMYK	cmyk(55.6%, 61.1%, 0%, 78.8%)
CIE-LAB	lab(8.96, 12.29, -21.22)
CIE-LCH	lch(8.96, 24.53, 300.07°)
OKLab	oklab(22.02% 0.0152 -0.0604)
OKLCH	oklch(22.02% 0.062 284.2)
XYZ	xyz(1.3105, 0.9968, 3.6127)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181536 #333615

analogous

#152336 #181536 #291536

triadic

#181536 #361815 #153618

tetradic

#181536 #361523 #333615 #153629

square

#181536 #361523 #333615 #153629

split-complementary

#181536 #362915 #233615

monochromatic

#0A0916 #0A0916 #181536 #2C2662 #3F378E

Accessibility & contrast

On white

17.51

#181536 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#181536 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181536

17.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181536	#FFFFFF	#000000	##FFFFFF
##181536	1.00	17.51	1.20	17.51
#FFFFFF	17.51	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#061A37

Deuteranopia (green-blind)

#051835

Tritanopia (blue-blind)

#0E1C23

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #181536;
/* rgb */ color: rgb(24, 21, 54);
/* oklch */ color: oklch(22.0% 0.062 284.2);

Tailwind

colors: {
  custom: {
    50: '#57526d',
    500: '#181536',
    950: '#000000',
  },
}

SCSS

$custom: #181536;
$custom-light: #57526d;
$custom-dark: #000000;

JSON

{
  "hex": "#181536",
  "rgb": {
    "r": 24,
    "g": 21,
    "b": 54
  },
  "hsl": {
    "h": 245.455,
    "s": 44,
    "l": 14.706
  },
  "oklch": {
    "l": 0.22016,
    "c": 0.06233,
    "h": 284.2
  },
  "luminance": 0.00997
}

Semantic roles & 50–950 ramp

primary

#181536

secondary

#686D3A

accent

#D454C8

background

#F5F4F6

surface

#E9E7EB

border

#C5C3C6

text

#030207

muted

#78787A

Preview Lab

Preview with #181536

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

Preview Lab → · Contrast checker → · Palette generator →