#133A9E#133A9E

#133A9E is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.168 H 263.9°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#133A9E
RGB	rgb(19, 58, 158)
HSL	hsl(223, 79%, 35%)
HSV	hsv(223, 88%, 62%)
CMYK	cmyk(88%, 63.3%, 0%, 38%)
CIE-LAB	lab(28.46, 27.02, -57.69)
CIE-LCH	lch(28.46, 63.70, 295.09°)
OKLab	oklab(39.34% -0.0179 -0.1671)
OKLCH	oklch(39.34% 0.168 263.9)
XYZ	xyz(7.9510, 5.6322, 33.0092)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133A9E #9E7713

analogous

#13809E #133A9E #31139E

triadic

#133A9E #9E133A #3A9E13

tetradic

#133A9E #9E1380 #9E7713 #139E31

square

#133A9E #9E1380 #9E7713 #139E31

split-complementary

#133A9E #9E3113 #809E13

monochromatic

#061231 #0C2667 #133A9E #1A4ED5 #4371E8

Accessibility & contrast

On white

9.87

#133A9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#133A9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A9E

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133A9E	#FFFFFF	#000000	##FFFFFF
##133A9E	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA1

Deuteranopia (green-blind)

#003D9C

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #133a9e;
/* rgb */ color: rgb(19, 58, 158);
/* oklch */ color: oklch(39.3% 0.168 263.9);

Tailwind

colors: {
  custom: {
    50: '#6e6fbc',
    500: '#133a9e',
    950: '#000000',
  },
}

SCSS

$custom: #133a9e;
$custom-light: #6e6fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#133a9e",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 158
  },
  "hsl": {
    "h": 223.165,
    "s": 78.531,
    "l": 34.706
  },
  "oklch": {
    "l": 0.3934,
    "c": 0.16806,
    "h": 263.9
  },
  "luminance": 0.05633
}

Semantic roles & 50–950 ramp

primary

#133A9E

secondary

#C9A344

accent

#BF33F5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #133A9E

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

Preview Lab → · Contrast checker → · Palette generator →