#133580#133580

#133580 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.133 H 263.0°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#133580
RGB	rgb(19, 53, 128)
HSL	hsl(221, 74%, 29%)
HSV	hsv(221, 85%, 50%)
CMYK	cmyk(85.2%, 58.6%, 0%, 49.8%)
CIE-LAB	lab(24.46, 18.26, -45.71)
CIE-LCH	lch(24.46, 49.22, 291.78°)
OKLab	oklab(35.53% -0.0162 -0.132)
OKLCH	oklch(35.53% 0.133 263)
XYZ	xyz(5.4365, 4.2425, 20.9502)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133580 #805E13

analogous

#136C80 #133580 #271380

triadic

#133580 #801335 #358013

tetradic

#133580 #80136C #805E13 #138027

square

#133580 #80136C #805E13 #138027

split-complementary

#133580 #802713 #6C8013

monochromatic

#040B1B #0B1F4B #133580 #1B4BB5 #2D65E0

Accessibility & contrast

On white

11.36

#133580 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#133580 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133580

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133580	#FFFFFF	#000000	##FFFFFF
##133580	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F83

Deuteranopia (green-blind)

#00357F

Tritanopia (blue-blind)

#004855

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #133580;
/* rgb */ color: rgb(19, 53, 128);
/* oklch */ color: oklch(35.5% 0.133 263.0);

Tailwind

colors: {
  custom: {
    50: '#666ba5',
    500: '#133580',
    950: '#000000',
  },
}

SCSS

$custom: #133580;
$custom-light: #666ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#133580",
  "rgb": {
    "r": 19,
    "g": 53,
    "b": 128
  },
  "hsl": {
    "h": 221.284,
    "s": 74.15,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35528,
    "c": 0.13304,
    "h": 263
  },
  "luminance": 0.04243
}

Semantic roles & 50–950 ramp

primary

#133580

secondary

#B58F39

accent

#B737F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #133580

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

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