#133A7D#133A7D

#133A7D is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.4% C 0.122 H 260.5°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#133A7D
RGB	rgb(19, 58, 125)
HSL	hsl(218, 74%, 28%)
HSV	hsv(218, 85%, 49%)
CMYK	cmyk(84.8%, 53.6%, 0%, 51%)
CIE-LAB	lab(25.70, 13.45, -41.81)
CIE-LCH	lch(25.70, 43.92, 287.84°)
OKLab	oklab(36.39% -0.0201 -0.1205)
OKLCH	oklch(36.39% 0.122 260.5)
XYZ	xyz(5.4819, 4.6446, 20.0056)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133A7D #7D5613

analogous

#136F7D #133A7D #21137D

triadic

#133A7D #7D133A #3A7D13

tetradic

#133A7D #7D136F #7D5613 #137D21

square

#133A7D #7D136F #7D5613 #137D21

split-complementary

#133A7D #7D2113 #6F7D13

monochromatic

#040C1B #0B2148 #133A7D #1B53B2 #2C6EDF

Accessibility & contrast

On white

10.89

#133A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#133A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133A7D

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133A7D	#FFFFFF	#000000	##FFFFFF
##133A7D	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C427F

Deuteranopia (green-blind)

#00387C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #133a7d;
/* rgb */ color: rgb(19, 58, 125);
/* oklch */ color: oklch(36.4% 0.122 260.5);

Tailwind

colors: {
  custom: {
    50: '#656fa3',
    500: '#133a7d',
    950: '#000000',
  },
}

SCSS

$custom: #133a7d;
$custom-light: #656fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#133a7d",
  "rgb": {
    "r": 19,
    "g": 58,
    "b": 125
  },
  "hsl": {
    "h": 217.925,
    "s": 73.611,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36393,
    "c": 0.12214,
    "h": 260.5
  },
  "luminance": 0.04645
}

Semantic roles & 50–950 ramp

primary

#133A7D

secondary

#B38639

accent

#AC38F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #133A7D

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

Preview Lab → · Contrast checker → · Palette generator →