#133B8E#133B8E

#133B8E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.145 H 262.4°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#133B8E
RGB	rgb(19, 59, 142)
HSL	hsl(220, 76%, 32%)
HSV	hsv(220, 87%, 56%)
CMYK	cmyk(86.6%, 58.5%, 0%, 44.3%)
CIE-LAB	lab(27.35, 19.83, -49.72)
CIE-LCH	lch(27.35, 53.53, 291.75°)
OKLab	oklab(38.07% -0.0191 -0.1437)
OKLCH	oklch(38.07% 0.145 262.4)
XYZ	xyz(6.7132, 5.2185, 26.2394)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133B8E #8E6613

analogous

#13798E #133B8E #29138E

triadic

#133B8E #8E133B #3B8E13

tetradic

#133B8E #8E1379 #8E6613 #138E29

square

#133B8E #8E1379 #8E6613 #138E29

split-complementary

#133B8E #8E2913 #798E13

monochromatic

#050E22 #0C2558 #133B8E #1A51C4 #376FE4

Accessibility & contrast

On white

10.27

#133B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#133B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B8E

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133B8E	#FFFFFF	#000000	##FFFFFF
##133B8E	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004691

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #133b8e;
/* rgb */ color: rgb(19, 59, 142);
/* oklch */ color: oklch(38.1% 0.145 262.4);

Tailwind

colors: {
  custom: {
    50: '#6970b0',
    500: '#133b8e',
    950: '#000000',
  },
}

SCSS

$custom: #133b8e;
$custom-light: #6970b0;
$custom-dark: #000000;

JSON

{
  "hex": "#133b8e",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 142
  },
  "hsl": {
    "h": 220.488,
    "s": 76.398,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38073,
    "c": 0.14498,
    "h": 262.4
  },
  "luminance": 0.05219
}

Semantic roles & 50–950 ramp

primary

#133B8E

secondary

#C2963B

accent

#B535F3

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #133B8E

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

Preview Lab → · Contrast checker → · Palette generator →