#181D6C#181D6C

#181D6C is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.0% C 0.134 H 271.8°. Best body text is #FFFFFF at 14.67:1 contrast (WCAG AA passes).

Color values

HEX	#181D6C
RGB	rgb(24, 29, 108)
HSL	hsl(236, 64%, 26%)
HSV	hsv(236, 78%, 42%)
CMYK	cmyk(77.8%, 73.1%, 0%, 57.6%)
CIE-LAB	lab(16.28, 27.55, -46.27)
CIE-LCH	lch(16.28, 53.85, 300.76°)
OKLab	oklab(28.97% 0.0041 -0.1339)
OKLCH	oklch(28.97% 0.134 271.8)
XYZ	xyz(3.5219, 2.1553, 14.4148)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D6C #6C6718

analogous

#18476C #181D6C #3D186C

triadic

#181D6C #6C181D #1D6C18

tetradic

#181D6C #6C1847 #6C6718 #186C3D

square

#181D6C #6C1847 #6C6718 #186C3D

split-complementary

#181D6C #6C3D18 #476C18

monochromatic

#060719 #0D103A #181D6C #232A9E #2E38D0

Accessibility & contrast

On white

14.67

#181D6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181D6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D6C

14.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D6C	#FFFFFF	#000000	##FFFFFF
##181D6C	1.00	14.67	1.43	14.67
#FFFFFF	14.67	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6E

Deuteranopia (green-blind)

#00246B

Tritanopia (blue-blind)

#003342

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181d6c;
/* rgb */ color: rgb(24, 29, 108);
/* oklch */ color: oklch(29.0% 0.134 271.8);

Tailwind

colors: {
  custom: {
    50: '#645997',
    500: '#181d6c',
    950: '#000000',
  },
}

SCSS

$custom: #181d6c;
$custom-light: #645997;
$custom-dark: #000000;

JSON

{
  "hex": "#181d6c",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 108
  },
  "hsl": {
    "h": 236.429,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28966,
    "c": 0.13394,
    "h": 271.8
  },
  "luminance": 0.02156
}

Semantic roles & 50–950 ramp

primary

#181D6C

secondary

#A29C3E

accent

#DD41E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #181D6C

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

Preview Lab → · Contrast checker → · Palette generator →