#181D6A#181D6A

#181D6A is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.7% C 0.131 H 271.9°. Best body text is #FFFFFF at 14.76:1 contrast (WCAG AA passes).

Color values

HEX	#181D6A
RGB	rgb(24, 29, 106)
HSL	hsl(236, 63%, 25%)
HSV	hsv(236, 77%, 42%)
CMYK	cmyk(77.4%, 72.6%, 0%, 58.4%)
CIE-LAB	lab(16.07, 26.78, -45.32)
CIE-LCH	lch(16.07, 52.64, 300.58°)
OKLab	oklab(28.75% 0.0044 -0.1311)
OKLCH	oklch(28.75% 0.131 271.9)
XYZ	xyz(3.4167, 2.1132, 13.8607)
Luminance	0.0211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D6A #6A6518

analogous

#18466A #181D6A #3C186A

triadic

#181D6A #6A181D #1D6A18

tetradic

#181D6A #6A1846 #6A6518 #186A3C

square

#181D6A #6A1846 #6A6518 #186A3C

split-complementary

#181D6A #6A3C18 #466A18

monochromatic

#060719 #0D0F38 #181D6A #232B9C #2F38CE

Accessibility & contrast

On white

14.76

#181D6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181D6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D6A

14.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D6A	#FFFFFF	#000000	##FFFFFF
##181D6A	1.00	14.76	1.42	14.76
#FFFFFF	14.76	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6C

Deuteranopia (green-blind)

#002469

Tritanopia (blue-blind)

#003241

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181d6a;
/* rgb */ color: rgb(24, 29, 106);
/* oklch */ color: oklch(28.7% 0.131 271.9);

Tailwind

colors: {
  custom: {
    50: '#635995',
    500: '#181d6a',
    950: '#000000',
  },
}

SCSS

$custom: #181d6a;
$custom-light: #635995;
$custom-dark: #000000;

JSON

{
  "hex": "#181d6a",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 106
  },
  "hsl": {
    "h": 236.341,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.2875,
    "c": 0.13115,
    "h": 271.9
  },
  "luminance": 0.02114
}

Semantic roles & 50–950 ramp

primary

#181D6A

secondary

#A09A3E

accent

#DC42E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181D6A

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

Preview Lab → · Contrast checker → · Palette generator →