#133579#133579

#133579 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 34.9% C 0.123 H 262.2°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#133579
RGB	rgb(19, 53, 121)
HSL	hsl(220, 73%, 27%)
HSV	hsv(220, 84%, 47%)
CMYK	cmyk(84.3%, 56.2%, 0%, 52.5%)
CIE-LAB	lab(23.88, 15.33, -42.22)
CIE-LCH	lch(23.88, 44.92, 289.96°)
OKLab	oklab(34.91% -0.0168 -0.1218)
OKLCH	oklch(34.91% 0.123 262.2)
XYZ	xyz(4.9916, 4.0645, 18.6069)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133579 #795713

analogous

#136879 #133579 #241379

triadic

#133579 #791335 #357913

tetradic

#133579 #791368 #795713 #137924

square

#133579 #791368 #795713 #137924

split-complementary

#133579 #792413 #687913

monochromatic

#040C1A #0B1E44 #133579 #1B4CAE #2965DD

Accessibility & contrast

On white

11.58

#133579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#133579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133579

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133579	#FFFFFF	#000000	##FFFFFF
##133579	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7B

Deuteranopia (green-blind)

#003478

Tritanopia (blue-blind)

#004651

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #133579;
/* rgb */ color: rgb(19, 53, 121);
/* oklch */ color: oklch(34.9% 0.123 262.2);

Tailwind

colors: {
  custom: {
    50: '#646ba0',
    500: '#133579',
    950: '#000000',
  },
}

SCSS

$custom: #133579;
$custom-light: #646ba0;
$custom-dark: #000000;

JSON

{
  "hex": "#133579",
  "rgb": {
    "r": 19,
    "g": 53,
    "b": 121
  },
  "hsl": {
    "h": 220,
    "s": 72.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.34914,
    "c": 0.12295,
    "h": 262.2
  },
  "luminance": 0.04065
}

Semantic roles & 50–950 ramp

primary

#133579

secondary

#AF8839

accent

#B238F0

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060F

muted

#7A7A7E

Preview Lab

Preview with #133579

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

Preview Lab → · Contrast checker → · Palette generator →