#181E66#181E66

#181E66 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.5% C 0.124 H 271.9°. Best body text is #FFFFFF at 14.83:1 contrast (WCAG AA passes).

Color values

HEX	#181E66
RGB	rgb(24, 30, 102)
HSL	hsl(235, 62%, 25%)
HSV	hsv(235, 76%, 40%)
CMYK	cmyk(76.5%, 70.6%, 0%, 60%)
CIE-LAB	lab(15.91, 24.55, -42.95)
CIE-LCH	lch(15.91, 49.47, 299.75°)
OKLab	oklab(28.51% 0.0042 -0.1242)
OKLCH	oklch(28.51% 0.124 271.9)
XYZ	xyz(3.2384, 2.0817, 12.7989)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E66 #666018

analogous

#184566 #181E66 #391866

triadic

#181E66 #66181E #1E6618

tetradic

#181E66 #661845 #666018 #186639

square

#181E66 #661845 #666018 #186639

split-complementary

#181E66 #663918 #456618

monochromatic

#060719 #0C0F34 #181E66 #242D98 #2F3BC9

Accessibility & contrast

On white

14.83

#181E66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181E66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E66

14.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E66	#FFFFFF	#000000	##FFFFFF
##181E66	1.00	14.83	1.42	14.83
#FFFFFF	14.83	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B68

Deuteranopia (green-blind)

#002465

Tritanopia (blue-blind)

#00313F

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181e66;
/* rgb */ color: rgb(24, 30, 102);
/* oklch */ color: oklch(28.5% 0.124 271.9);

Tailwind

colors: {
  custom: {
    50: '#625a92',
    500: '#181e66',
    950: '#000000',
  },
}

SCSS

$custom: #181e66;
$custom-light: #625a92;
$custom-dark: #000000;

JSON

{
  "hex": "#181e66",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 102
  },
  "hsl": {
    "h": 235.385,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.28508,
    "c": 0.12425,
    "h": 271.9
  },
  "luminance": 0.02082
}

Semantic roles & 50–950 ramp

primary

#181E66

secondary

#9C953E

accent

#D943E5

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #181E66

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

Preview Lab → · Contrast checker → · Palette generator →