#181C6A#181C6A

#181C6A is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.6% C 0.132 H 272.2°. Best body text is #FFFFFF at 14.86:1 contrast (WCAG AA passes).

Color values

HEX	#181C6A
RGB	rgb(24, 28, 106)
HSL	hsl(237, 63%, 25%)
HSV	hsv(237, 77%, 42%)
CMYK	cmyk(77.4%, 73.6%, 0%, 58.4%)
CIE-LAB	lab(15.82, 27.45, -45.72)
CIE-LCH	lch(15.82, 53.33, 300.98°)
OKLab	oklab(28.57% 0.005 -0.1323)
OKLCH	oklch(28.57% 0.132 272.2)
XYZ	xyz(3.3926, 2.0650, 13.8527)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C6A #6A6618

analogous

#18456A #181C6A #3D186A

triadic

#181C6A #6A181C #1C6A18

tetradic

#181C6A #6A1845 #6A6618 #186A3D

square

#181C6A #6A1845 #6A6618 #186A3D

split-complementary

#181C6A #6A3D18 #456A18

monochromatic

#060719 #0D0F38 #181C6A #23299C #2F36CE

Accessibility & contrast

On white

14.86

#181C6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#181C6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C6A

14.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C6A	#FFFFFF	#000000	##FFFFFF
##181C6A	1.00	14.86	1.41	14.86
#FFFFFF	14.86	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6C

Deuteranopia (green-blind)

#002369

Tritanopia (blue-blind)

#003240

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #181c6a;
/* rgb */ color: rgb(24, 28, 106);
/* oklch */ color: oklch(28.6% 0.132 272.2);

Tailwind

colors: {
  custom: {
    50: '#645895',
    500: '#181c6a',
    950: '#000000',
  },
}

SCSS

$custom: #181c6a;
$custom-light: #645895;
$custom-dark: #000000;

JSON

{
  "hex": "#181c6a",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 106
  },
  "hsl": {
    "h": 237.073,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28572,
    "c": 0.13236,
    "h": 272.2
  },
  "luminance": 0.02065
}

Semantic roles & 50–950 ramp

primary

#181C6A

secondary

#A09B3E

accent

#DE42E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181C6A

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

Preview Lab → · Contrast checker → · Palette generator →