#181A78#181A78

#181A78 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.153 H 271.4°. Best body text is #FFFFFF at 14.41:1 contrast (WCAG AA passes).

Color values

HEX	#181A78
RGB	rgb(24, 26, 120)
HSL	hsl(239, 67%, 28%)
HSV	hsv(239, 80%, 47%)
CMYK	cmyk(80%, 78.3%, 0%, 52.9%)
CIE-LAB	lab(16.93, 33.90, -52.96)
CIE-LCH	lch(16.93, 62.88, 302.62°)
OKLab	oklab(29.83% 0.0037 -0.1533)
OKLCH	oklch(29.83% 0.153 271.4)
XYZ	xyz(4.1351, 2.2886, 17.9895)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A78 #787618

analogous

#184A78 #181A78 #461878

triadic

#181A78 #78181A #1A7818

tetradic

#181A78 #78184A #787618 #187846

square

#181A78 #78184A #787618 #187846

split-complementary

#181A78 #784618 #4A7818

monochromatic

#05061A #0E0F45 #181A78 #2225AB #3437D6

Accessibility & contrast

On white

14.41

#181A78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181A78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A78

14.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A78	#FFFFFF	#000000	##FFFFFF
##181A78	1.00	14.41	1.46	14.41
#FFFFFF	14.41	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7B

Deuteranopia (green-blind)

#002576

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181a78;
/* rgb */ color: rgb(24, 26, 120);
/* oklch */ color: oklch(29.8% 0.153 271.4);

Tailwind

colors: {
  custom: {
    50: '#6858a0',
    500: '#181a78',
    950: '#000000',
  },
}

SCSS

$custom: #181a78;
$custom-light: #6858a0;
$custom-dark: #000000;

JSON

{
  "hex": "#181a78",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 120
  },
  "hsl": {
    "h": 238.75,
    "s": 66.667,
    "l": 28.235
  },
  "oklch": {
    "l": 0.29832,
    "c": 0.15338,
    "h": 271.4
  },
  "luminance": 0.02289
}

Semantic roles & 50–950 ramp

primary

#181A78

secondary

#ADAB3F

accent

#E63EEA

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #181A78

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

Preview Lab → · Contrast checker → · Palette generator →