#133B8F#133B8F

#133B8F is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.2% C 0.146 H 262.5°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX#133B8F
RGBrgb(19, 59, 143)
HSLhsl(221, 77%, 32%)
HSVhsv(221, 87%, 56%)
CMYKcmyk(86.7%, 58.7%, 0%, 43.9%)
CIE-LABlab(27.43, 20.25, -50.20)
CIE-LCHlch(27.43, 54.13, 291.96°)
OKLaboklab(38.16% -0.019 -0.1451)
OKLCHoklch(38.16% 0.146 262.5)
XYZxyz(6.7887, 5.2487, 26.6366)
Luminance0.0525 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#133B8F #8F6713
analogous
#13798F #133B8F #29138F
triadic
#133B8F #8F133B #3B8F13
tetradic
#133B8F #8F1379 #8F6713 #138F29
square
#133B8F #8F1379 #8F6713 #138F29
split-complementary
#133B8F #8F2913 #798F13
monochromatic
#050E23 #0C2559 #133B8F #1A51C5 #3870E5

Accessibility & contrast

On white

10.24
#133B8F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.05
#133B8F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B8F
10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##133B8F#FFFFFF#000000##FFFFFF
##133B8F1.0010.242.0510.24
#FFFFFF10.241.0021.001.00
#0000002.0521.001.0021.00
##FFFFFF10.241.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004792
Deuteranopia (green-blind)
#003B8D
Tritanopia (blue-blind)
#00505F
Achromatopsia (no color)
#414141

Design tokens & code

CSS
--color: #133b8f;
/* rgb */ color: rgb(19, 59, 143);
/* oklch */ color: oklch(38.2% 0.146 262.5);
Tailwind
colors: {
  custom: {
    50: '#6a70b1',
    500: '#133b8f',
    950: '#000000',
  },
}
SCSS
$custom: #133b8f;
$custom-light: #6a70b1;
$custom-dark: #000000;
JSON
{
  "hex": "#133b8f",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 220.645,
    "s": 76.543,
    "l": 31.765
  },
  "oklch": {
    "l": 0.38162,
    "c": 0.14638,
    "h": 262.5
  },
  "luminance": 0.0525
}

Semantic roles & 50–950 ramp

primary
#133B8F
secondary
#C3973B
accent
#B635F3
background
#F6F6FB
surface
#ECECF6
border
#C7C7D0
text
#080711
muted
#7A7A80

Preview Lab

Preview with #133B8F

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

Preview Lab → · Contrast checker → · Palette generator →

#133B8F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva