#181C6D#181C6D

#181C6D is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.9% C 0.137 H 271.9°. Best body text is #FFFFFF at 14.73:1 contrast (WCAG AA passes).

Color values

HEX	#181C6D
RGB	rgb(24, 28, 109)
HSL	hsl(237, 64%, 26%)
HSV	hsv(237, 78%, 43%)
CMYK	cmyk(78%, 74.3%, 0%, 57.3%)
CIE-LAB	lab(16.15, 28.59, -47.15)
CIE-LCH	lch(16.15, 55.14, 301.23°)
OKLab	oklab(28.9% 0.0046 -0.1364)
OKLCH	oklch(28.9% 0.137 271.9)
XYZ	xyz(3.5513, 2.1285, 14.6887)
Luminance	0.0213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C6D #6D6918

analogous

#18466D #181C6D #3E186D

triadic

#181C6D #6D181C #1C6D18

tetradic

#181C6D #6D1846 #6D6918 #186D3E

square

#181C6D #6D1846 #6D6918 #186D3E

split-complementary

#181C6D #6D3E18 #466D18

monochromatic

#060619 #0D0F3B #181C6D #23299F #2E36D1

Accessibility & contrast

On white

14.73

#181C6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181C6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C6D

14.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C6D	#FFFFFF	#000000	##FFFFFF
##181C6D	1.00	14.73	1.43	14.73
#FFFFFF	14.73	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6F

Deuteranopia (green-blind)

#00246C

Tritanopia (blue-blind)

#003342

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181c6d;
/* rgb */ color: rgb(24, 28, 109);
/* oklch */ color: oklch(28.9% 0.137 271.9);

Tailwind

colors: {
  custom: {
    50: '#645998',
    500: '#181c6d',
    950: '#000000',
  },
}

SCSS

$custom: #181c6d;
$custom-light: #645998;
$custom-dark: #000000;

JSON

{
  "hex": "#181c6d",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 109
  },
  "hsl": {
    "h": 237.176,
    "s": 63.91,
    "l": 26.078
  },
  "oklch": {
    "l": 0.28902,
    "c": 0.13651,
    "h": 271.9
  },
  "luminance": 0.02129
}

Semantic roles & 50–950 ramp

primary

#181C6D

secondary

#A39E3E

accent

#DF41E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #181C6D

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

Preview Lab → · Contrast checker → · Palette generator →