#37578F#37578F

#37578F is a mid, moderate blue. Relative luminance 0.096; OKLCH L 46.0% C 0.099 H 260.9°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#37578F
RGB	rgb(55, 87, 143)
HSL	hsl(218, 44%, 39%)
HSV	hsv(218, 62%, 56%)
CMYK	cmyk(61.5%, 39.2%, 0%, 43.9%)
CIE-LAB	lab(37.13, 6.54, -34.52)
CIE-LCH	lch(37.13, 35.14, 280.73°)
OKLab	oklab(46% -0.0157 -0.098)
OKLCH	oklch(46% 0.099 260.9)
XYZ	xyz(9.9399, 9.6109, 27.3126)
Luminance	0.0961 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37578F #8F6F37

analogous

#37838F #37578F #43378F

triadic

#37578F #8F3757 #578F37

tetradic

#37578F #8F3783 #8F6F37 #378F43

square

#37578F #8F3783 #8F6F37 #378F43

split-complementary

#37578F #8F4337 #838F37

monochromatic

#152137 #263C63 #37578F #4A72B9 #7695CA

Accessibility & contrast

On white

7.19

#37578F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#37578F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37578F

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37578F	#FFFFFF	#000000	##FFFFFF
##37578F	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5C91

Deuteranopia (green-blind)

#33548E

Tritanopia (blue-blind)

#00646C

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #37578f;
/* rgb */ color: rgb(55, 87, 143);
/* oklch */ color: oklch(46.0% 0.099 260.9);

Tailwind

colors: {
  custom: {
    50: '#7686b0',
    500: '#37578f',
    950: '#000000',
  },
}

SCSS

$custom: #37578f;
$custom-light: #7686b0;
$custom-dark: #000000;

JSON

{
  "hex": "#37578f",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 143
  },
  "hsl": {
    "h": 218.182,
    "s": 44.444,
    "l": 38.824
  },
  "oklch": {
    "l": 0.46004,
    "c": 0.09922,
    "h": 260.9
  },
  "luminance": 0.09612
}

Semantic roles & 50–950 ramp

primary

#37578F

secondary

#B39A6F

accent

#A554D4

background

#F7F8FA

surface

#EDEFF5

border

#C8CACF

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #37578F

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

Preview Lab → · Contrast checker → · Palette generator →