#181778#181778

#181778 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.4% C 0.156 H 271.8°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#181778
RGB	rgb(24, 23, 120)
HSL	hsl(241, 68%, 28%)
HSV	hsv(241, 81%, 47%)
CMYK	cmyk(80%, 80.8%, 0%, 52.9%)
CIE-LAB	lab(16.32, 35.65, -53.98)
CIE-LCH	lch(16.32, 64.69, 303.44°)
OKLab	oklab(29.4% 0.0049 -0.1563)
OKLCH	oklch(29.4% 0.156 271.8)
XYZ	xyz(4.0721, 2.1626, 17.9685)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181778 #777817

analogous

#174678 #181778 #491778

triadic

#181778 #781817 #177818

tetradic

#181778 #781746 #777817 #177849

square

#181778 #781746 #777817 #177849

split-complementary

#181778 #784917 #467817

monochromatic

#05051A #0E0D45 #181778 #2221AB #3332D8

Accessibility & contrast

On white

14.66

#181778 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181778 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181778

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181778	#FFFFFF	#000000	##FFFFFF
##181778	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7B

Deuteranopia (green-blind)

#002476

Tritanopia (blue-blind)

#003547

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181778;
/* rgb */ color: rgb(24, 23, 120);
/* oklch */ color: oklch(29.4% 0.156 271.8);

Tailwind

colors: {
  custom: {
    50: '#6856a0',
    500: '#181778',
    950: '#000000',
  },
}

SCSS

$custom: #181778;
$custom-light: #6856a0;
$custom-dark: #000000;

JSON

{
  "hex": "#181778",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 120
  },
  "hsl": {
    "h": 240.619,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29398,
    "c": 0.15634,
    "h": 271.8
  },
  "luminance": 0.02163
}

Semantic roles & 50–950 ramp

primary

#181778

secondary

#ACAD3E

accent

#EB3DE9

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181778

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

Preview Lab → · Contrast checker → · Palette generator →