#133A5B#133A5B

#133A5B is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.9% C 0.073 H 247.6°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX#133A5B
RGBrgb(19, 58, 91)
HSLhsl(208, 65%, 22%)
HSVhsv(208, 79%, 36%)
CMYKcmyk(79.1%, 36.3%, 0%, 64.3%)
CIE-LABlab(23.40, -0.86, -23.66)
CIE-LCHlch(23.40, 23.67, 267.92°)
OKLaboklab(33.88% -0.0276 -0.0672)
OKLCHoklch(33.88% 0.073 247.6)
XYZxyz(3.6692, 3.9195, 10.4587)
Luminance0.0392 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#133A5B #5B3413
analogous
#135B58 #133A5B #13165B
triadic
#133A5B #5B133A #3A5B13
tetradic
#133A5B #58135B #5B3413 #165B13
square
#133A5B #58135B #5B3413 #165B13
split-complementary
#133A5B #5B1316 #5B5813
monochromatic
#051019 #081A28 #133A5B #1E5A8E #287BC0

Accessibility & contrast

On white

11.77
#133A5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.78
#133A5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A5B
11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##133A5B#FFFFFF#000000##FFFFFF
##133A5B1.0011.771.7811.77
#FFFFFF11.771.0021.001.00
#0000001.7821.001.0021.00
##FFFFFF11.771.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2B3B5C
Deuteranopia (green-blind)
#21355A
Tritanopia (blue-blind)
#004246
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #133a5b;
/* rgb */ color: rgb(19, 58, 91);
/* oklch */ color: oklch(33.9% 0.073 247.6);
Tailwind
colors: {
  custom: {
    50: '#5c6f89',
    500: '#133a5b',
    950: '#000000',
  },
}
SCSS
$custom: #133a5b;
$custom-light: #5c6f89;
$custom-dark: #000000;
JSON
{
  "hex": "#133a5b",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 91
  },
  "hsl": {
    "h": 207.5,
    "s": 65.455,
    "l": 21.569
  },
  "oklch": {
    "l": 0.33878,
    "c": 0.07264,
    "h": 247.6
  },
  "luminance": 0.0392
}

Semantic roles & 50–950 ramp

primary
#133A5B
secondary
#936137
accent
#8D3FE8
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#04070B
muted
#797A7C

Preview Lab

Preview with #133A5B

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

Preview Lab → · Contrast checker → · Palette generator →

#133A5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva