#37579C#37579C

#37579C is a mid, moderate blue. Relative luminance 0.100; OKLCH L 46.8% C 0.118 H 263.7°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#37579C
RGB	rgb(55, 87, 156)
HSL	hsl(221, 48%, 41%)
HSV	hsv(221, 65%, 61%)
CMYK	cmyk(64.7%, 44.2%, 0%, 38.8%)
CIE-LAB	lab(37.89, 11.24, -41.16)
CIE-LCH	lch(37.89, 42.66, 285.27°)
OKLab	oklab(46.84% -0.0129 -0.1174)
OKLCH	oklch(46.84% 0.118 263.7)
XYZ	xyz(10.9824, 10.0279, 32.8029)
Luminance	0.1003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37579C #9C7C37

analogous

#378A9C #37579C #4A379C

triadic

#37579C #9C3757 #579C37

tetradic

#37579C #9C378A #9C7C37 #379C4A

square

#37579C #9C378A #9C7C37 #379C4A

split-complementary

#37579C #9C4A37 #8A9C37

monochromatic

#172542 #273E6F #37579C #4F73C1 #7C97D1

Accessibility & contrast

On white

6.99

#37579C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#37579C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37579C

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37579C	#FFFFFF	#000000	##FFFFFF
##37579C	1.00	6.99	3.01	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375E9F

Deuteranopia (green-blind)

#27559B

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #37579c;
/* rgb */ color: rgb(55, 87, 156);
/* oklch */ color: oklch(46.8% 0.118 263.7);

Tailwind

colors: {
  custom: {
    50: '#7886ba',
    500: '#37579c',
    950: '#000000',
  },
}

SCSS

$custom: #37579c;
$custom-light: #7886ba;
$custom-dark: #000000;

JSON

{
  "hex": "#37579c",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 156
  },
  "hsl": {
    "h": 220.99,
    "s": 47.867,
    "l": 41.373
  },
  "oklch": {
    "l": 0.46835,
    "c": 0.11813,
    "h": 263.7
  },
  "luminance": 0.10029
}

Semantic roles & 50–950 ramp

primary

#37579C

secondary

#BAA475

accent

#AD50D7

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #37579C

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

Preview Lab → · Contrast checker → · Palette generator →