#37579D#37579D

#37579D is a mid, moderate blue. Relative luminance 0.101; OKLCH L 46.9% C 0.120 H 263.9°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#37579D
RGB	rgb(55, 87, 157)
HSL	hsl(221, 48%, 42%)
HSV	hsv(221, 65%, 62%)
CMYK	cmyk(65%, 44.6%, 0%, 38.4%)
CIE-LAB	lab(37.95, 11.60, -41.66)
CIE-LCH	lch(37.95, 43.24, 285.56°)
OKLab	oklab(46.9% -0.0127 -0.1189)
OKLCH	oklch(46.9% 0.12 263.9)
XYZ	xyz(11.0674, 10.0619, 33.2506)
Luminance	0.1006 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37579D #9D7D37

analogous

#378A9D #37579D #4A379D

triadic

#37579D #9D3757 #579D37

tetradic

#37579D #9D378A #9D7D37 #379D4A

square

#37579D #9D378A #9D7D37 #379D4A

split-complementary

#37579D #9D4A37 #8A9D37

monochromatic

#172542 #273E70 #37579D #5073C2 #7D97D1

Accessibility & contrast

On white

6.97

#37579D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#37579D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37579D

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37579D	#FFFFFF	#000000	##FFFFFF
##37579D	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365EA0

Deuteranopia (green-blind)

#26559C

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #37579d;
/* rgb */ color: rgb(55, 87, 157);
/* oklch */ color: oklch(46.9% 0.120 263.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#37579d",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 157
  },
  "hsl": {
    "h": 221.176,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.46902,
    "c": 0.11958,
    "h": 263.9
  },
  "luminance": 0.10063
}

Semantic roles & 50–950 ramp

primary

#37579D

secondary

#BBA575

accent

#AD50D8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #37579D

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

Preview Lab → · Contrast checker → · Palette generator →