#182C78#182C78

#182C78 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.1% C 0.132 H 267.2°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#182C78
RGB	rgb(24, 44, 120)
HSL	hsl(228, 67%, 28%)
HSV	hsv(228, 80%, 47%)
CMYK	cmyk(80%, 63.3%, 0%, 52.9%)
CIE-LAB	lab(21.40, 21.88, -45.62)
CIE-LCH	lch(21.40, 50.60, 295.63°)
OKLab	oklab(33.07% -0.0064 -0.1319)
OKLCH	oklch(33.07% 0.132 267.2)
XYZ	xyz(4.6664, 3.3511, 18.1666)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182C78 #786418

analogous

#185C78 #182C78 #341878

triadic

#182C78 #78182C #2C7818

tetradic

#182C78 #78185C #786418 #187834

square

#182C78 #78185C #786418 #187834

split-complementary

#182C78 #783418 #5C7818

monochromatic

#05091A #0E1945 #182C78 #223FAB #3456D6

Accessibility & contrast

On white

12.57

#182C78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#182C78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182C78

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182C78	#FFFFFF	#000000	##FFFFFF
##182C78	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00387B

Deuteranopia (green-blind)

#002F77

Tritanopia (blue-blind)

#003F4D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #182c78;
/* rgb */ color: rgb(24, 44, 120);
/* oklch */ color: oklch(33.1% 0.132 267.2);

Tailwind

colors: {
  custom: {
    50: '#6664a0',
    500: '#182c78',
    950: '#000000',
  },
}

SCSS

$custom: #182c78;
$custom-light: #6664a0;
$custom-dark: #000000;

JSON

{
  "hex": "#182c78",
  "rgb": {
    "r": 24,
    "g": 44,
    "b": 120
  },
  "hsl": {
    "h": 227.5,
    "s": 66.667,
    "l": 28.235
  },
  "oklch": {
    "l": 0.33075,
    "c": 0.13202,
    "h": 267.2
  },
  "luminance": 0.03352
}

Semantic roles & 50–950 ramp

primary

#182C78

secondary

#AD963F

accent

#C63EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050F

muted

#7A7A7E

Preview Lab

Preview with #182C78

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

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