#133A8E#133A8E

#133A8E is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.146 H 262.8°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#133A8E
RGB	rgb(19, 58, 142)
HSL	hsl(221, 76%, 32%)
HSV	hsv(221, 87%, 56%)
CMYK	cmyk(86.6%, 59.2%, 0%, 44.3%)
CIE-LAB	lab(27.06, 20.53, -50.18)
CIE-LCH	lch(27.06, 54.22, 292.25°)
OKLab	oklab(37.86% -0.0184 -0.1451)
OKLCH	oklch(37.86% 0.146 262.8)
XYZ	xyz(6.6623, 5.1167, 26.2224)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133A8E #8E6713

analogous

#13788E #133A8E #2A138E

triadic

#133A8E #8E133A #3A8E13

tetradic

#133A8E #8E1378 #8E6713 #138E2A

square

#133A8E #8E1378 #8E6713 #138E2A

split-complementary

#133A8E #8E2A13 #788E13

monochromatic

#050E22 #0C2458 #133A8E #1A50C4 #376EE4

Accessibility & contrast

On white

10.38

#133A8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#133A8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A8E

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133A8E	#FFFFFF	#000000	##FFFFFF
##133A8E	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004691

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#004F5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #133a8e;
/* rgb */ color: rgb(19, 58, 142);
/* oklch */ color: oklch(37.9% 0.146 262.8);

Tailwind

colors: {
  custom: {
    50: '#696fb0',
    500: '#133a8e',
    950: '#000000',
  },
}

SCSS

$custom: #133a8e;
$custom-light: #696fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#133a8e",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 142
  },
  "hsl": {
    "h": 220.976,
    "s": 76.398,
    "l": 31.569
  },
  "oklch": {
    "l": 0.3786,
    "c": 0.14627,
    "h": 262.8
  },
  "luminance": 0.05118
}

Semantic roles & 50–950 ramp

primary

#133A8E

secondary

#C2973B

accent

#B735F3

background

#F6F6FA

surface

#ECECF5

border

#C7C7CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #133A8E

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

Preview Lab → · Contrast checker → · Palette generator →