#182B78#182B78

#182B78 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.9% C 0.133 H 267.5°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#182B78
RGB	rgb(24, 43, 120)
HSL	hsl(228, 67%, 28%)
HSV	hsv(228, 80%, 47%)
CMYK	cmyk(80%, 64.2%, 0%, 52.9%)
CIE-LAB	lab(21.12, 22.59, -46.07)
CIE-LCH	lch(21.12, 51.31, 296.12°)
OKLab	oklab(32.87% -0.0057 -0.1332)
OKLCH	oklch(32.87% 0.133 267.5)
XYZ	xyz(4.6296, 3.2775, 18.1543)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182B78 #786518

analogous

#185B78 #182B78 #351878

triadic

#182B78 #78182B #2B7818

tetradic

#182B78 #78185B #786518 #187835

square

#182B78 #78185B #786518 #187835

split-complementary

#182B78 #783518 #5B7818

monochromatic

#05091A #0E1945 #182B78 #223DAB #3454D6

Accessibility & contrast

On white

12.68

#182B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#182B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182B78

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182B78	#FFFFFF	#000000	##FFFFFF
##182B78	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377B

Deuteranopia (green-blind)

#002E77

Tritanopia (blue-blind)

#003F4D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #182b78;
/* rgb */ color: rgb(24, 43, 120);
/* oklch */ color: oklch(32.9% 0.133 267.5);

Tailwind

colors: {
  custom: {
    50: '#6664a0',
    500: '#182b78',
    950: '#000000',
  },
}

SCSS

$custom: #182b78;
$custom-light: #6664a0;
$custom-dark: #000000;

JSON

{
  "hex": "#182b78",
  "rgb": {
    "r": 24,
    "g": 43,
    "b": 120
  },
  "hsl": {
    "h": 228.125,
    "s": 66.667,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32871,
    "c": 0.13332,
    "h": 267.5
  },
  "luminance": 0.03278
}

Semantic roles & 50–950 ramp

primary

#182B78

secondary

#AD973F

accent

#C83EEA

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #182B78

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

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