#37579F#37579F

#37579F is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.0% C 0.122 H 264.2°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#37579F
RGB	rgb(55, 87, 159)
HSL	hsl(222, 49%, 42%)
HSV	hsv(222, 65%, 62%)
CMYK	cmyk(65.4%, 45.3%, 0%, 37.6%)
CIE-LAB	lab(38.08, 12.33, -42.66)
CIE-LCH	lch(38.08, 44.41, 286.12°)
OKLab	oklab(47.04% -0.0123 -0.1218)
OKLCH	oklch(47.04% 0.122 264.2)
XYZ	xyz(11.2396, 10.1308, 34.1573)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37579F #9F7F37

analogous

#378B9F #37579F #4B379F

triadic

#37579F #9F3757 #579F37

tetradic

#37579F #9F378B #9F7F37 #379F4B

square

#37579F #9F378B #9F7F37 #379F4B

split-complementary

#37579F #9F4B37 #8B9F37

monochromatic

#182544 #273E72 #37579F #5174C3 #7E98D2

Accessibility & contrast

On white

6.94

#37579F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#37579F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37579F

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37579F	#FFFFFF	#000000	##FFFFFF
##37579F	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355FA2

Deuteranopia (green-blind)

#23559E

Tritanopia (blue-blind)

#006773

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #37579f;
/* rgb */ color: rgb(55, 87, 159);
/* oklch */ color: oklch(47.0% 0.122 264.2);

Tailwind

colors: {
  custom: {
    50: '#7985bc',
    500: '#37579f',
    950: '#000000',
  },
}

SCSS

$custom: #37579f;
$custom-light: #7985bc;
$custom-dark: #000000;

JSON

{
  "hex": "#37579f",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 159
  },
  "hsl": {
    "h": 221.538,
    "s": 48.598,
    "l": 41.961
  },
  "oklch": {
    "l": 0.47036,
    "c": 0.12246,
    "h": 264.2
  },
  "luminance": 0.10132
}

Semantic roles & 50–950 ramp

primary

#37579F

secondary

#BCA676

accent

#AE50D8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #37579F

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

Preview Lab → · Contrast checker → · Palette generator →