#133D5B#133D5B

#133D5B is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.070 H 243.7°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX#133D5B
RGBrgb(19, 61, 91)
HSLhsl(205, 65%, 22%)
HSVhsv(205, 79%, 36%)
CMYKcmyk(79.1%, 33%, 0%, 64.3%)
CIE-LABlab(24.42, -2.88, -22.06)
CIE-LCHlch(24.42, 22.24, 262.55°)
OKLaboklab(34.68% -0.0309 -0.0624)
OKLCHoklch(34.68% 0.07 243.7)
XYZxyz(3.8249, 4.2308, 10.5105)
Luminance0.0423 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#133D5B #5B3113
analogous
#135B55 #133D5B #13195B
triadic
#133D5B #5B133D #3D5B13
tetradic
#133D5B #55135B #5B3113 #195B13
square
#133D5B #55135B #5B3113 #195B13
split-complementary
#133D5B #5B1319 #5B5513
monochromatic
#051119 #081B28 #133D5B #1E5F8E #2881C0

Accessibility & contrast

On white

11.37
#133D5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.85
#133D5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133D5B
11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##133D5B#FFFFFF#000000##FFFFFF
##133D5B1.0011.371.8511.37
#FFFFFF11.371.0021.001.00
#0000001.8521.001.0021.00
##FFFFFF11.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2F3E5C
Deuteranopia (green-blind)
#25375A
Tritanopia (blue-blind)
#004448
Achromatopsia (no color)
#3A3A3A

Design tokens & code

CSS
--color: #133d5b;
/* rgb */ color: rgb(19, 61, 91);
/* oklch */ color: oklch(34.7% 0.070 243.7);
Tailwind
colors: {
  custom: {
    50: '#5c7289',
    500: '#133d5b',
    950: '#000000',
  },
}
SCSS
$custom: #133d5b;
$custom-light: #5c7289;
$custom-dark: #000000;
JSON
{
  "hex": "#133d5b",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 91
  },
  "hsl": {
    "h": 205,
    "s": 65.455,
    "l": 21.569
  },
  "oklch": {
    "l": 0.3468,
    "c": 0.06969,
    "h": 243.7
  },
  "luminance": 0.04231
}

Semantic roles & 50–950 ramp

primary
#133D5B
secondary
#935D37
accent
#863FE8
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#04070B
muted
#797A7C

Preview Lab

Preview with #133D5B

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

Preview Lab → · Contrast checker → · Palette generator →

#133D5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva