#181D49#181D49

#181D49 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.5% C 0.081 H 274.2°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#181D49
RGB	rgb(24, 29, 73)
HSL	hsl(234, 51%, 19%)
HSV	hsv(234, 67%, 29%)
CMYK	cmyk(67.1%, 60.3%, 0%, 71.4%)
CIE-LAB	lab(12.95, 13.69, -28.24)
CIE-LCH	lch(12.95, 31.38, 295.86°)
OKLab	oklab(25.49% 0.006 -0.081)
OKLCH	oklch(25.49% 0.081 274.2)
XYZ	xyz(2.0183, 1.5538, 6.4956)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.63

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D49 #494418

analogous

#183649 #181D49 #2C1849

triadic

#181D49 #49181D #1D4918

tetradic

#181D49 #491836 #494418 #18492C

square

#181D49 #491836 #494418 #18492C

split-complementary

#181D49 #492C18 #364918

monochromatic

#080917 #090B1B #181D49 #272F77 #3642A5

Accessibility & contrast

On white

16.02

#181D49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#181D49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D49

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D49	#FFFFFF	#000000	##FFFFFF
##181D49	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02244B

Deuteranopia (green-blind)

#001F48

Tritanopia (blue-blind)

#00272F

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181d49;
/* rgb */ color: rgb(24, 29, 73);
/* oklch */ color: oklch(25.5% 0.081 274.2);

Tailwind

colors: {
  custom: {
    50: '#5b587c',
    500: '#181d49',
    950: '#000000',
  },
}

SCSS

$custom: #181d49;
$custom-light: #5b587c;
$custom-dark: #000000;

JSON

{
  "hex": "#181d49",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 73
  },
  "hsl": {
    "h": 233.878,
    "s": 50.515,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25486,
    "c": 0.08122,
    "h": 274.2
  },
  "luminance": 0.01554
}

Semantic roles & 50–950 ramp

primary

#181D49

secondary

#80793D

accent

#CC4EDA

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #181D49

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

Preview Lab → · Contrast checker → · Palette generator →