#181C6B#181C6B

#181C6B is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.7% C 0.134 H 272.1°. Best body text is #FFFFFF at 14.82:1 contrast (WCAG AA passes).

Color values

HEX	#181C6B
RGB	rgb(24, 28, 107)
HSL	hsl(237, 63%, 26%)
HSV	hsv(237, 78%, 42%)
CMYK	cmyk(77.6%, 73.8%, 0%, 58%)
CIE-LAB	lab(15.93, 27.83, -46.20)
CIE-LCH	lch(15.93, 53.93, 301.07°)
OKLab	oklab(28.68% 0.0049 -0.1337)
OKLCH	oklch(28.68% 0.134 272.1)
XYZ	xyz(3.4449, 2.0859, 14.1281)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C6B #6B6718

analogous

#18456B #181C6B #3D186B

triadic

#181C6B #6B181C #1C6B18

tetradic

#181C6B #6B1845 #6B6718 #186B3D

square

#181C6B #6B1845 #6B6718 #186B3D

split-complementary

#181C6B #6B3D18 #456B18

monochromatic

#060719 #0D0F39 #181C6B #23299D #2E36CF

Accessibility & contrast

On white

14.82

#181C6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181C6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C6B

14.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C6B	#FFFFFF	#000000	##FFFFFF
##181C6B	1.00	14.82	1.42	14.82
#FFFFFF	14.82	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6D

Deuteranopia (green-blind)

#00246A

Tritanopia (blue-blind)

#003241

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181c6b;
/* rgb */ color: rgb(24, 28, 107);
/* oklch */ color: oklch(28.7% 0.134 272.1);

Tailwind

colors: {
  custom: {
    50: '#645896',
    500: '#181c6b',
    950: '#000000',
  },
}

SCSS

$custom: #181c6b;
$custom-light: #645896;
$custom-dark: #000000;

JSON

{
  "hex": "#181c6b",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 107
  },
  "hsl": {
    "h": 237.108,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28682,
    "c": 0.13375,
    "h": 272.1
  },
  "luminance": 0.02086
}

Semantic roles & 50–950 ramp

primary

#181C6B

secondary

#A19C3E

accent

#DE41E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181C6B

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

Preview Lab → · Contrast checker → · Palette generator →