#133A7B#133A7B

#133A7B is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.119 H 260.2°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX#133A7B
RGBrgb(19, 58, 123)
HSLhsl(218, 73%, 28%)
HSVhsv(218, 85%, 48%)
CMYKcmyk(84.6%, 52.8%, 0%, 51.8%)
CIE-LABlab(25.55, 12.61, -40.79)
CIE-LCHlch(25.55, 42.70, 287.18°)
OKLaboklab(36.23% -0.0203 -0.1175)
OKLCHoklch(36.23% 0.119 260.2)
XYZxyz(5.3555, 4.5940, 19.3395)
Luminance0.0459 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#133A7B #7B5413
analogous
#136E7B #133A7B #20137B
triadic
#133A7B #7B133A #3A7B13
tetradic
#133A7B #7B136E #7B5413 #137B20
square
#133A7B #7B136E #7B5413 #137B20
split-complementary
#133A7B #7B2013 #6E7B13
monochromatic
#040C1B #0B2146 #133A7B #1B53B0 #2A6EDE

Accessibility & contrast

On white

10.94
#133A7B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.92
#133A7B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A7B
10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##133A7B#FFFFFF#000000##FFFFFF
##133A7B1.0010.941.9210.94
#FFFFFF10.941.0021.001.00
#0000001.9221.001.0021.00
##FFFFFF10.941.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0F417D
Deuteranopia (green-blind)
#00387A
Tritanopia (blue-blind)
#004A54
Achromatopsia (no color)
#3D3D3D

Design tokens & code

CSS
--color: #133a7b;
/* rgb */ color: rgb(19, 58, 123);
/* oklch */ color: oklch(36.2% 0.119 260.2);
Tailwind
colors: {
  custom: {
    50: '#646fa2',
    500: '#133a7b',
    950: '#000000',
  },
}
SCSS
$custom: #133a7b;
$custom-light: #646fa2;
$custom-dark: #000000;
JSON
{
  "hex": "#133a7b",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 123
  },
  "hsl": {
    "h": 217.5,
    "s": 73.239,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36229,
    "c": 0.11925,
    "h": 260.2
  },
  "luminance": 0.04595
}

Semantic roles & 50–950 ramp

primary
#133A7B
secondary
#B18439
accent
#AB38F0
background
#F6F6FA
surface
#EBECF3
border
#C6C7CD
text
#06070F
muted
#7A7A7F

Preview Lab

Preview with #133A7B

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

Preview Lab → · Contrast checker → · Palette generator →

#133A7B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva