#37579A#37579A

#37579A is a mid, moderate blue. Relative luminance 0.100; OKLCH L 46.7% C 0.115 H 263.4°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).

Color values

HEX	#37579A
RGB	rgb(55, 87, 154)
HSL	hsl(221, 47%, 41%)
HSV	hsv(221, 64%, 60%)
CMYK	cmyk(64.3%, 43.5%, 0%, 39.6%)
CIE-LAB	lab(37.77, 10.51, -40.15)
CIE-LCH	lch(37.77, 41.50, 284.67°)
OKLab	oklab(46.7% -0.0133 -0.1145)
OKLCH	oklch(46.7% 0.115 263.4)
XYZ	xyz(10.8144, 9.9607, 31.9183)
Luminance	0.0996 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37579A #9A7A37

analogous

#37889A #37579A #48379A

triadic

#37579A #9A3757 #579A37

tetradic

#37579A #9A3788 #9A7A37 #379A48

square

#37579A #9A3788 #9A7A37 #379A48

split-complementary

#37579A #9A4837 #889A37

monochromatic

#172440 #273E6D #37579A #4E73C0 #7B97D0

Accessibility & contrast

On white

7.02

#37579A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#37579A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37579A

7.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37579A	#FFFFFF	#000000	##FFFFFF
##37579A	1.00	7.02	2.99	7.02
#FFFFFF	7.02	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#385E9D

Deuteranopia (green-blind)

#295599

Tritanopia (blue-blind)

#006671

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #37579a;
/* rgb */ color: rgb(55, 87, 154);
/* oklch */ color: oklch(46.7% 0.115 263.4);

Tailwind

colors: {
  custom: {
    50: '#7886b8',
    500: '#37579a',
    950: '#000000',
  },
}

SCSS

$custom: #37579a;
$custom-light: #7886b8;
$custom-dark: #000000;

JSON

{
  "hex": "#37579a",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 154
  },
  "hsl": {
    "h": 220.606,
    "s": 47.368,
    "l": 40.98
  },
  "oklch": {
    "l": 0.46703,
    "c": 0.11523,
    "h": 263.4
  },
  "luminance": 0.09962
}

Semantic roles & 50–950 ramp

primary

#37579A

secondary

#B9A374

accent

#AC51D7

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B11

muted

#7C7C80

Preview Lab

Preview with #37579A

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

Preview Lab → · Contrast checker → · Palette generator →