#133A83#133A83

#133A83 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 36.9% C 0.131 H 261.5°. Best body text is #FFFFFF at 10.71:1 contrast (WCAG AA passes).

Color values

HEX	#133A83
RGB	rgb(19, 58, 131)
HSL	hsl(219, 75%, 29%)
HSV	hsv(219, 85%, 51%)
CMYK	cmyk(85.5%, 55.7%, 0%, 48.6%)
CIE-LAB	lab(26.16, 15.97, -44.81)
CIE-LCH	lch(26.16, 47.58, 289.62°)
OKLab	oklab(36.9% -0.0194 -0.1293)
OKLCH	oklch(36.9% 0.131 261.5)
XYZ	xyz(5.8769, 4.8025, 22.0856)
Luminance	0.0480 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133A83 #835C13

analogous

#137283 #133A83 #241383

triadic

#133A83 #83133A #3A8313

tetradic

#133A83 #831372 #835C13 #138324

square

#133A83 #831372 #835C13 #138324

split-complementary

#133A83 #832413 #728313

monochromatic

#040C1B #0B224E #133A83 #1B52B8 #2F6DE1

Accessibility & contrast

On white

10.71

#133A83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#133A83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A83

10.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133A83	#FFFFFF	#000000	##FFFFFF
##133A83	1.00	10.71	1.96	10.71
#FFFFFF	10.71	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004386

Deuteranopia (green-blind)

#003982

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #133a83;
/* rgb */ color: rgb(19, 58, 131);
/* oklch */ color: oklch(36.9% 0.131 261.5);

Tailwind

colors: {
  custom: {
    50: '#666fa8',
    500: '#133a83',
    950: '#000000',
  },
}

SCSS

$custom: #133a83;
$custom-light: #666fa8;
$custom-dark: #000000;

JSON

{
  "hex": "#133a83",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 131
  },
  "hsl": {
    "h": 219.107,
    "s": 74.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36897,
    "c": 0.13076,
    "h": 261.5
  },
  "luminance": 0.04803
}

Semantic roles & 50–950 ramp

primary

#133A83

secondary

#B88C3A

accent

#B037F1

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #133A83

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

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