#133681#133681

#133681 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.8% C 0.133 H 262.8°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#133681
RGB	rgb(19, 54, 129)
HSL	hsl(221, 74%, 29%)
HSV	hsv(221, 85%, 51%)
CMYK	cmyk(85.3%, 58.1%, 0%, 49.4%)
CIE-LAB	lab(24.83, 17.97, -45.73)
CIE-LCH	lch(24.83, 49.13, 291.45°)
OKLab	oklab(35.84% -0.0168 -0.1321)
OKLCH	oklch(35.84% 0.133 262.8)
XYZ	xyz(5.5487, 4.3611, 21.3139)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133681 #815E13

analogous

#136D81 #133681 #271381

triadic

#133681 #811336 #368113

tetradic

#133681 #81136D #815E13 #138127

square

#133681 #81136D #815E13 #138127

split-complementary

#133681 #812713 #6D8113

monochromatic

#040B1B #0B204C #133681 #1B4CB6 #2E67E0

Accessibility & contrast

On white

11.22

#133681 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#133681 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133681

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133681	#FFFFFF	#000000	##FFFFFF
##133681	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004084

Deuteranopia (green-blind)

#003680

Tritanopia (blue-blind)

#004956

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #133681;
/* rgb */ color: rgb(19, 54, 129);
/* oklch */ color: oklch(35.8% 0.133 262.8);

Tailwind

colors: {
  custom: {
    50: '#666ca6',
    500: '#133681',
    950: '#000000',
  },
}

SCSS

$custom: #133681;
$custom-light: #666ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#133681",
  "rgb": {
    "r": 19,
    "g": 54,
    "b": 129
  },
  "hsl": {
    "h": 220.909,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.35836,
    "c": 0.13315,
    "h": 262.8
  },
  "luminance": 0.04362
}

Semantic roles & 50–950 ramp

primary

#133681

secondary

#B68F3A

accent

#B637F1

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #133681

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

Preview Lab → · Contrast checker → · Palette generator →