#181544#181544

#181544 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.3% C 0.085 H 280.3°. Best body text is #FFFFFF at 17.08:1 contrast (WCAG AA passes).

Color values

HEX	#181544
RGB	rgb(24, 21, 68)
HSL	hsl(244, 53%, 17%)
HSV	hsv(244, 69%, 27%)
CMYK	cmyk(64.7%, 69.1%, 0%, 73.3%)
CIE-LAB	lab(10.17, 17.66, -29.26)
CIE-LCH	lch(10.17, 34.18, 301.11°)
OKLab	oklab(23.29% 0.0153 -0.0841)
OKLCH	oklch(23.29% 0.085 280.3)
XYZ	xyz(1.6879, 1.1478, 5.6003)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181544 #414415

analogous

#152944 #181544 #301544

triadic

#181544 #441815 #154418

tetradic

#181544 #441529 #414415 #154430

square

#181544 #441529 #414415 #154430

split-complementary

#181544 #443015 #294415

monochromatic

#080717 #080717 #181544 #292373 #3932A2

Accessibility & contrast

On white

17.08

#181544 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#181544 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181544

17.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181544	#FFFFFF	#000000	##FFFFFF
##181544	1.00	17.08	1.23	17.08
#FFFFFF	17.08	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E46

Deuteranopia (green-blind)

#001A43

Tritanopia (blue-blind)

#02202A

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #181544;
/* rgb */ color: rgb(24, 21, 68);
/* oklch */ color: oklch(23.3% 0.085 280.3);

Tailwind

colors: {
  custom: {
    50: '#5a5278',
    500: '#181544',
    950: '#000000',
  },
}

SCSS

$custom: #181544;
$custom-light: #5a5278;
$custom-dark: #000000;

JSON

{
  "hex": "#181544",
  "rgb": {
    "r": 24,
    "g": 21,
    "b": 68
  },
  "hsl": {
    "h": 243.83,
    "s": 52.809,
    "l": 17.451
  },
  "oklch": {
    "l": 0.23286,
    "c": 0.08546,
    "h": 280.3
  },
  "luminance": 0.01148
}

Semantic roles & 50–950 ramp

primary

#181544

secondary

#787C39

accent

#DC4CD3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040209

muted

#79787B

Preview Lab

Preview with #181544

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

Preview Lab → · Contrast checker → · Palette generator →