#183478#183478

#183478 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 34.8% C 0.121 H 264.1°. Best body text is #FFFFFF at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#183478
RGB	rgb(24, 52, 120)
HSL	hsl(223, 67%, 28%)
HSV	hsv(223, 80%, 47%)
CMYK	cmyk(80%, 56.7%, 0%, 52.9%)
CIE-LAB	lab(23.69, 16.19, -41.89)
CIE-LCH	lch(23.69, 44.91, 291.13°)
OKLab	oklab(34.79% -0.0124 -0.1208)
OKLCH	oklch(34.79% 0.121 264.1)
XYZ	xyz(4.9936, 4.0057, 18.2756)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183478 #785C18

analogous

#186478 #183478 #2C1878

triadic

#183478 #781834 #347818

tetradic

#183478 #781864 #785C18 #18782C

square

#183478 #781864 #785C18 #18782C

split-complementary

#183478 #782C18 #647818

monochromatic

#050B1A #0E1E45 #183478 #224AAB #3463D6

Accessibility & contrast

On white

11.66

#183478 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#183478 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183478

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183478	#FFFFFF	#000000	##FFFFFF
##183478	1.00	11.66	1.80	11.66
#FFFFFF	11.66	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D7A

Deuteranopia (green-blind)

#003477

Tritanopia (blue-blind)

#004550

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183478;
/* rgb */ color: rgb(24, 52, 120);
/* oklch */ color: oklch(34.8% 0.121 264.1);

Tailwind

colors: {
  custom: {
    50: '#656aa0',
    500: '#183478',
    950: '#000000',
  },
}

SCSS

$custom: #183478;
$custom-light: #656aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#183478",
  "rgb": {
    "r": 24,
    "g": 52,
    "b": 120
  },
  "hsl": {
    "h": 222.5,
    "s": 66.667,
    "l": 28.235
  },
  "oklch": {
    "l": 0.34794,
    "c": 0.1214,
    "h": 264.1
  },
  "luminance": 0.04006
}

Semantic roles & 50–950 ramp

primary

#183478

secondary

#AD8D3F

accent

#B83EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060F

muted

#7A7A7E

Preview Lab

Preview with #183478

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

Preview Lab → · Contrast checker → · Palette generator →