#183679#183679

#183679 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.3% C 0.120 H 263.4°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#183679
RGB	rgb(24, 54, 121)
HSL	hsl(221, 67%, 28%)
HSV	hsv(221, 80%, 47%)
CMYK	cmyk(80.2%, 55.4%, 0%, 52.5%)
CIE-LAB	lab(24.36, 15.18, -41.44)
CIE-LCH	lch(24.36, 44.13, 290.12°)
OKLab	oklab(35.33% -0.0139 -0.1194)
OKLCH	oklch(35.33% 0.12 263.4)
XYZ	xyz(5.1458, 4.2124, 18.6273)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183679 #795B18

analogous

#186679 #183679 #2A1879

triadic

#183679 #791836 #367918

tetradic

#183679 #791866 #795B18 #18792A

square

#183679 #791866 #795B18 #18792A

split-complementary

#183679 #792A18 #667918

monochromatic

#050B1A #0E1F46 #183679 #224DAC #3567D7

Accessibility & contrast

On white

11.40

#183679 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#183679 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183679

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183679	#FFFFFF	#000000	##FFFFFF
##183679	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#033F7B

Deuteranopia (green-blind)

#003678

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183679;
/* rgb */ color: rgb(24, 54, 121);
/* oklch */ color: oklch(35.3% 0.120 263.4);

Tailwind

colors: {
  custom: {
    50: '#656ca0',
    500: '#183679',
    950: '#000000',
  },
}

SCSS

$custom: #183679;
$custom-light: #656ca0;
$custom-dark: #000000;

JSON

{
  "hex": "#183679",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 121
  },
  "hsl": {
    "h": 221.443,
    "s": 66.897,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35327,
    "c": 0.12021,
    "h": 263.4
  },
  "luminance": 0.04213
}

Semantic roles & 50–950 ramp

primary

#183679

secondary

#AE8C3F

accent

#B53EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060F

muted

#7A7A7E

Preview Lab

Preview with #183679

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

Preview Lab → · Contrast checker → · Palette generator →