#182F78#182F78

#182F78 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.7% C 0.128 H 266.2°. Best body text is #FFFFFF at 12.23:1 contrast (WCAG AA passes).

Color values

HEX	#182F78
RGB	rgb(24, 47, 120)
HSL	hsl(226, 67%, 28%)
HSV	hsv(226, 80%, 47%)
CMYK	cmyk(80%, 60.8%, 0%, 52.9%)
CIE-LAB	lab(22.24, 19.75, -44.25)
CIE-LCH	lch(22.24, 48.46, 294.06°)
OKLab	oklab(33.7% -0.0085 -0.1278)
OKLCH	oklch(33.7% 0.128 266.2)
XYZ	xyz(4.7822, 3.5827, 18.2052)
Luminance	0.0358 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182F78 #786118

analogous

#185F78 #182F78 #311878

triadic

#182F78 #78182F #2F7818

tetradic

#182F78 #78185F #786118 #187831

square

#182F78 #78185F #786118 #187831

split-complementary

#182F78 #783118 #5F7818

monochromatic

#050A1A #0E1B45 #182F78 #2243AB #345BD6

Accessibility & contrast

On white

12.23

#182F78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#182F78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182F78

12.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182F78	#FFFFFF	#000000	##FFFFFF
##182F78	1.00	12.23	1.72	12.23
#FFFFFF	12.23	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7A

Deuteranopia (green-blind)

#003177

Tritanopia (blue-blind)

#00414E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #182f78;
/* rgb */ color: rgb(24, 47, 120);
/* oklch */ color: oklch(33.7% 0.128 266.2);

Tailwind

colors: {
  custom: {
    50: '#6667a0',
    500: '#182f78',
    950: '#000000',
  },
}

SCSS

$custom: #182f78;
$custom-light: #6667a0;
$custom-dark: #000000;

JSON

{
  "hex": "#182f78",
  "rgb": {
    "r": 24,
    "g": 47,
    "b": 120
  },
  "hsl": {
    "h": 225.625,
    "s": 66.667,
    "l": 28.235
  },
  "oklch": {
    "l": 0.33704,
    "c": 0.12808,
    "h": 266.2
  },
  "luminance": 0.03583
}

Semantic roles & 50–950 ramp

primary

#182F78

secondary

#AD933F

accent

#C13EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #182F78

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

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