#133F7D#133F7D

#133F7D is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.116 H 258.0°. Best body text is #FFFFFF at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#133F7D
RGB	rgb(19, 63, 125)
HSL	hsl(215, 74%, 28%)
HSV	hsv(215, 85%, 49%)
CMYK	cmyk(84.8%, 49.6%, 0%, 51%)
CIE-LAB	lab(27.22, 9.93, -39.34)
CIE-LCH	lch(27.22, 40.58, 284.17°)
OKLab	oklab(37.56% -0.024 -0.1131)
OKLCH	oklch(37.56% 0.116 258)
XYZ	xyz(5.7464, 5.1734, 20.0938)
Luminance	0.0517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#133F7D #7D5113

analogous

#13747D #133F7D #1C137D

triadic

#133F7D #7D133F #3F7D13

tetradic

#133F7D #7D1374 #7D5113 #137D1C

square

#133F7D #7D1374 #7D5113 #137D1C

split-complementary

#133F7D #7D1C13 #747D13

monochromatic

#040D1B #0B2448 #133F7D #1B5AB2 #2C76DF

Accessibility & contrast

On white

10.32

#133F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#133F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #133F7D

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##133F7D	#FFFFFF	#000000	##FFFFFF
##133F7D	1.00	10.32	2.03	10.32
#FFFFFF	10.32	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C457F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004E58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #133f7d;
/* rgb */ color: rgb(19, 63, 125);
/* oklch */ color: oklch(37.6% 0.116 258.0);

Tailwind

colors: {
  custom: {
    50: '#6473a3',
    500: '#133f7d',
    950: '#000000',
  },
}

SCSS

$custom: #133f7d;
$custom-light: #6473a3;
$custom-dark: #000000;

JSON

{
  "hex": "#133f7d",
  "rgb": {
    "r": 19,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 215.094,
    "s": 73.611,
    "l": 28.235
  },
  "oklch": {
    "l": 0.37563,
    "c": 0.11564,
    "h": 258
  },
  "luminance": 0.05174
}

Semantic roles & 50–950 ramp

primary

#133F7D

secondary

#B38039

accent

#A438F0

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#06080F

muted

#7A7B7F

Preview Lab

Preview with #133F7D

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

Preview Lab → · Contrast checker → · Palette generator →