#37578D#37578D

#37578D is a mid, moderate blue. Relative luminance 0.096; OKLCH L 45.9% C 0.096 H 260.3°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#37578D
RGB	rgb(55, 87, 141)
HSL	hsl(218, 44%, 38%)
HSV	hsv(218, 61%, 55%)
CMYK	cmyk(61%, 38.3%, 0%, 44.7%)
CIE-LAB	lab(37.02, 5.83, -33.48)
CIE-LCH	lch(37.02, 33.99, 279.87°)
OKLab	oklab(45.88% -0.0162 -0.0949)
OKLCH	oklch(45.88% 0.096 260.3)
XYZ	xyz(9.7898, 9.5509, 26.5217)
Luminance	0.0955 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37578D #8D6D37

analogous

#37828D #37578D #42378D

triadic

#37578D #8D3757 #578D37

tetradic

#37578D #8D3782 #8D6D37 #378D42

square

#37578D #8D3782 #8D6D37 #378D42

split-complementary

#37578D #8D4237 #828D37

monochromatic

#152135 #263C61 #37578D #4972B8 #7594C9

Accessibility & contrast

On white

7.22

#37578D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#37578D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37578D

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37578D	#FFFFFF	#000000	##FFFFFF
##37578D	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#405B8F

Deuteranopia (green-blind)

#35538C

Tritanopia (blue-blind)

#00636B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #37578d;
/* rgb */ color: rgb(55, 87, 141);
/* oklch */ color: oklch(45.9% 0.096 260.3);

Tailwind

colors: {
  custom: {
    50: '#7686ae',
    500: '#37578d',
    950: '#000000',
  },
}

SCSS

$custom: #37578d;
$custom-light: #7686ae;
$custom-dark: #000000;

JSON

{
  "hex": "#37578d",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 141
  },
  "hsl": {
    "h": 217.674,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.45881,
    "c": 0.0963,
    "h": 260.3
  },
  "luminance": 0.09552
}

Semantic roles & 50–950 ramp

primary

#37578D

secondary

#B2996E

accent

#A454D4

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #37578D

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

Preview Lab → · Contrast checker → · Palette generator →