#133D7B#133D7B

#133D7B is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.115 H 258.6°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX#133D7B
RGBrgb(19, 61, 123)
HSLhsl(216, 73%, 28%)
HSVhsv(216, 85%, 48%)
CMYKcmyk(84.6%, 50.4%, 0%, 51.8%)
CIE-LABlab(26.46, 10.49, -39.31)
CIE-LCHlch(26.46, 40.69, 284.95°)
OKLaboklab(36.93% -0.0227 -0.1131)
OKLCHoklch(36.93% 0.115 258.6)
XYZxyz(5.5111, 4.9053, 19.3914)
Luminance0.0491 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#133D7B #7B5113
analogous
#13717B #133D7B #1D137B
triadic
#133D7B #7B133D #3D7B13
tetradic
#133D7B #7B1371 #7B5113 #137B1D
square
#133D7B #7B1371 #7B5113 #137B1D
split-complementary
#133D7B #7B1D13 #717B13
monochromatic
#040D1B #0B2346 #133D7B #1B57B0 #2A73DE

Accessibility & contrast

On white

10.60
#133D7B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.98
#133D7B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133D7B
10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##133D7B#FFFFFF#000000##FFFFFF
##133D7B1.0010.601.9810.60
#FFFFFF10.601.0021.001.00
#0000001.9821.001.0021.00
##FFFFFF10.601.0021.001.00

Color blindness preview

Protanopia (red-blind)
#19447D
Deuteranopia (green-blind)
#003A7A
Tritanopia (blue-blind)
#004C56
Achromatopsia (no color)
#3F3F3F

Design tokens & code

CSS
--color: #133d7b;
/* rgb */ color: rgb(19, 61, 123);
/* oklch */ color: oklch(36.9% 0.115 258.6);
Tailwind
colors: {
  custom: {
    50: '#6471a2',
    500: '#133d7b',
    950: '#000000',
  },
}
SCSS
$custom: #133d7b;
$custom-light: #6471a2;
$custom-dark: #000000;
JSON
{
  "hex": "#133d7b",
  "rgb": {
    "r": 19,
    "g": 61,
    "b": 123
  },
  "hsl": {
    "h": 215.769,
    "s": 73.239,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36933,
    "c": 0.11534,
    "h": 258.6
  },
  "luminance": 0.04906
}

Semantic roles & 50–950 ramp

primary
#133D7B
secondary
#B18039
accent
#A638F0
background
#F6F6FA
surface
#EBECF3
border
#C6C7CD
text
#06070F
muted
#7A7A7F

Preview Lab

Preview with #133D7B

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

Preview Lab → · Contrast checker → · Palette generator →

#133D7B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva