#133F8C#133F8C

#133F8C is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.137 H 260.8°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#133F8C
RGB	rgb(19, 63, 140)
HSL	hsl(218, 76%, 31%)
HSV	hsv(218, 86%, 55%)
CMYK	cmyk(86.4%, 55%, 0%, 45.1%)
CIE-LAB	lab(28.34, 16.21, -46.87)
CIE-LCH	lch(28.34, 49.59, 289.08°)
OKLab	oklab(38.78% -0.0219 -0.1353)
OKLCH	oklch(38.78% 0.137 260.8)
XYZ	xyz(6.7780, 5.5861, 25.5268)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133F8C #8C6013

analogous

#137B8C #133F8C #23138C

triadic

#133F8C #8C133F #3F8C13

tetradic

#133F8C #8C137B #8C6013 #138C23

square

#133F8C #8C137B #8C6013 #138C23

split-complementary

#133F8C #8C2313 #7B8C13

monochromatic

#040F20 #0C2756 #133F8C #1A57C2 #3675E4

Accessibility & contrast

On white

9.92

#133F8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#133F8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133F8C

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133F8C	#FFFFFF	#000000	##FFFFFF
##133F8C	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00498F

Deuteranopia (green-blind)

#003E8A

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #133f8c;
/* rgb */ color: rgb(19, 63, 140);
/* oklch */ color: oklch(38.8% 0.137 260.8);

Tailwind

colors: {
  custom: {
    50: '#6873ae',
    500: '#133f8c',
    950: '#000000',
  },
}

SCSS

$custom: #133f8c;
$custom-light: #6873ae;
$custom-dark: #000000;

JSON

{
  "hex": "#133f8c",
  "rgb": {
    "r": 19,
    "g": 63,
    "b": 140
  },
  "hsl": {
    "h": 218.182,
    "s": 76.101,
    "l": 31.176
  },
  "oklch": {
    "l": 0.38776,
    "c": 0.13702,
    "h": 260.8
  },
  "luminance": 0.05587
}

Semantic roles & 50–950 ramp

primary

#133F8C

secondary

#C0903B

accent

#AE35F3

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #133F8C

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

Preview Lab → · Contrast checker → · Palette generator →