#37519B#37519B

#37519B is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.4% C 0.124 H 266.9°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#37519B
RGB	rgb(55, 81, 155)
HSL	hsl(224, 48%, 41%)
HSV	hsv(224, 65%, 61%)
CMYK	cmyk(64.5%, 47.7%, 0%, 39.2%)
CIE-LAB	lab(36.10, 14.81, -43.42)
CIE-LCH	lch(36.10, 45.87, 288.83°)
OKLab	oklab(45.44% -0.0068 -0.1241)
OKLCH	oklch(45.44% 0.124 266.9)
XYZ	xyz(10.4323, 9.0627, 32.2035)
Luminance	0.0906 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37519B #9B8137

analogous

#37839B #37519B #4F379B

triadic

#37519B #9B3751 #519B37

tetradic

#37519B #9B3783 #9B8137 #379B4F

square

#37519B #9B3783 #9B8137 #379B4F

split-complementary

#37519B #9B4F37 #839B37

monochromatic

#172241 #27396E #37519B #4F6CC0 #7C92D0

Accessibility & contrast

On white

7.47

#37519B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#37519B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37519B

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37519B	#FFFFFF	#000000	##FFFFFF
##37519B	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C5A9E

Deuteranopia (green-blind)

#1A5199

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #37519b;
/* rgb */ color: rgb(55, 81, 155);
/* oklch */ color: oklch(45.4% 0.124 266.9);

Tailwind

colors: {
  custom: {
    50: '#7881b9',
    500: '#37519b',
    950: '#000000',
  },
}

SCSS

$custom: #37519b;
$custom-light: #7881b9;
$custom-dark: #000000;

JSON

{
  "hex": "#37519b",
  "rgb": {
    "r": 55,
    "g": 81,
    "b": 155
  },
  "hsl": {
    "h": 224.4,
    "s": 47.619,
    "l": 41.176
  },
  "oklch": {
    "l": 0.45444,
    "c": 0.12434,
    "h": 266.9
  },
  "luminance": 0.09064
}

Semantic roles & 50–950 ramp

primary

#37519B

secondary

#BAA874

accent

#B451D7

background

#F7F7FB

surface

#EEEEF6

border

#C9C9D0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #37519B

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

Preview Lab → · Contrast checker → · Palette generator →