#133B5B#133B5B

#133B5B is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.1% C 0.072 H 246.3°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX#133B5B
RGBrgb(19, 59, 91)
HSLhsl(207, 65%, 22%)
HSVhsv(207, 79%, 36%)
CMYKcmyk(79.1%, 35.2%, 0%, 64.3%)
CIE-LABlab(23.74, -1.54, -23.12)
CIE-LCHlch(23.74, 23.17, 266.19°)
OKLaboklab(34.14% -0.0287 -0.0656)
OKLCHoklch(34.14% 0.072 246.3)
XYZxyz(3.7201, 4.0213, 10.4756)
Luminance0.0402 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#133B5B #5B3313
analogous
#135B57 #133B5B #13175B
triadic
#133B5B #5B133B #3B5B13
tetradic
#133B5B #57135B #5B3313 #175B13
square
#133B5B #57135B #5B3313 #175B13
split-complementary
#133B5B #5B1317 #5B5713
monochromatic
#051019 #081A28 #133B5B #1E5C8E #287DC0

Accessibility & contrast

On white

11.64
#133B5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.80
#133B5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133B5B
11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##133B5B#FFFFFF#000000##FFFFFF
##133B5B1.0011.641.8011.64
#FFFFFF11.641.0021.001.00
#0000001.8021.001.0021.00
##FFFFFF11.641.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2C3C5C
Deuteranopia (green-blind)
#22355A
Tritanopia (blue-blind)
#004346
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #133b5b;
/* rgb */ color: rgb(19, 59, 91);
/* oklch */ color: oklch(34.1% 0.072 246.3);
Tailwind
colors: {
  custom: {
    50: '#5c7089',
    500: '#133b5b',
    950: '#000000',
  },
}
SCSS
$custom: #133b5b;
$custom-light: #5c7089;
$custom-dark: #000000;
JSON
{
  "hex": "#133b5b",
  "rgb": {
    "r": 19,
    "g": 59,
    "b": 91
  },
  "hsl": {
    "h": 206.667,
    "s": 65.455,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34144,
    "c": 0.07161,
    "h": 246.3
  },
  "luminance": 0.04022
}

Semantic roles & 50–950 ramp

primary
#133B5B
secondary
#936037
accent
#8B3FE8
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#04070B
muted
#797A7C

Preview Lab

Preview with #133B5B

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

Preview Lab → · Contrast checker → · Palette generator →

#133B5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva