#133A8F#133A8F

#133A8F is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.148 H 262.8°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX#133A8F
RGBrgb(19, 58, 143)
HSLhsl(221, 77%, 32%)
HSVhsv(221, 87%, 56%)
CMYKcmyk(86.7%, 59.4%, 0%, 43.9%)
CIE-LABlab(27.15, 20.94, -50.66)
CIE-LCHlch(27.15, 54.82, 292.46°)
OKLaboklab(37.95% -0.0184 -0.1465)
OKLCHoklch(37.95% 0.148 262.8)
XYZxyz(6.7378, 5.1469, 26.6196)
Luminance0.0515 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#133A8F #8F6813
analogous
#13788F #133A8F #2A138F
triadic
#133A8F #8F133A #3A8F13
tetradic
#133A8F #8F1378 #8F6813 #138F2A
square
#133A8F #8F1378 #8F6813 #138F2A
split-complementary
#133A8F #8F2A13 #788F13
monochromatic
#050E23 #0C2459 #133A8F #1A50C5 #386EE5

Accessibility & contrast

On white

10.35
#133A8F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.03
#133A8F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A8F
10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##133A8F#FFFFFF#000000##FFFFFF
##133A8F1.0010.352.0310.35
#FFFFFF10.351.0021.001.00
#0000002.0321.001.0021.00
##FFFFFF10.351.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004692
Deuteranopia (green-blind)
#003B8D
Tritanopia (blue-blind)
#00505E
Achromatopsia (no color)
#404040

Design tokens & code

CSS
--color: #133a8f;
/* rgb */ color: rgb(19, 58, 143);
/* oklch */ color: oklch(37.9% 0.148 262.8);
Tailwind
colors: {
  custom: {
    50: '#6a6fb1',
    500: '#133a8f',
    950: '#000000',
  },
}
SCSS
$custom: #133a8f;
$custom-light: #6a6fb1;
$custom-dark: #000000;
JSON
{
  "hex": "#133a8f",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 143
  },
  "hsl": {
    "h": 221.129,
    "s": 76.543,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37949,
    "c": 0.14766,
    "h": 262.8
  },
  "luminance": 0.05148
}

Semantic roles & 50–950 ramp

primary
#133A8F
secondary
#C3983B
accent
#B735F3
background
#F6F6FB
surface
#ECECF6
border
#C7C7D0
text
#080711
muted
#7A7A80

Preview Lab

Preview with #133A8F

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

Preview Lab → · Contrast checker → · Palette generator →

#133A8F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva