#133D81#133D81

#133D81 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.4% C 0.124 H 259.9°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#133D81
RGB	rgb(19, 61, 129)
HSL	hsl(217, 74%, 29%)
HSV	hsv(217, 85%, 51%)
CMYK	cmyk(85.3%, 52.7%, 0%, 49.4%)
CIE-LAB	lab(26.91, 13.02, -42.36)
CIE-LCH	lch(26.91, 44.32, 287.08°)
OKLab	oklab(37.41% -0.0218 -0.122)
OKLCH	oklch(37.41% 0.124 259.9)
XYZ	xyz(5.8983, 5.0602, 21.4305)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133D81 #815713

analogous

#137481 #133D81 #201381

triadic

#133D81 #81133D #3D8113

tetradic

#133D81 #811374 #815713 #138120

square

#133D81 #811374 #815713 #138120

split-complementary

#133D81 #812013 #748113

monochromatic

#040D1B #0B244C #133D81 #1B56B6 #2E72E0

Accessibility & contrast

On white

10.44

#133D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#133D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133D81

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133D81	#FFFFFF	#000000	##FFFFFF
##133D81	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104583

Deuteranopia (green-blind)

#003B80

Tritanopia (blue-blind)

#004E59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #133d81;
/* rgb */ color: rgb(19, 61, 129);
/* oklch */ color: oklch(37.4% 0.124 259.9);

Tailwind

colors: {
  custom: {
    50: '#6671a6',
    500: '#133d81',
    950: '#000000',
  },
}

SCSS

$custom: #133d81;
$custom-light: #6671a6;
$custom-dark: #000000;

JSON

{
  "hex": "#133d81",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 129
  },
  "hsl": {
    "h": 217.091,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37413,
    "c": 0.12399,
    "h": 259.9
  },
  "luminance": 0.05061
}

Semantic roles & 50–950 ramp

primary

#133D81

secondary

#B6873A

accent

#AA37F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #133D81

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

Preview Lab → · Contrast checker → · Palette generator →