#37578C#37578C

#37578C is a mid, moderate blue. Relative luminance 0.095; OKLCH L 45.8% C 0.095 H 260.0°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#37578C
RGB	rgb(55, 87, 140)
HSL	hsl(217, 44%, 38%)
HSV	hsv(217, 61%, 55%)
CMYK	cmyk(60.7%, 37.9%, 0%, 45.1%)
CIE-LAB	lab(36.97, 5.47, -32.96)
CIE-LCH	lch(36.97, 33.41, 279.42°)
OKLab	oklab(45.82% -0.0165 -0.0934)
OKLCH	oklch(45.82% 0.095 260)
XYZ	xyz(9.7157, 9.5212, 26.1316)
Luminance	0.0952 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37578C #8C6C37

analogous

#37818C #37578C #41378C

triadic

#37578C #8C3757 #578C37

tetradic

#37578C #8C3781 #8C6C37 #378C41

square

#37578C #8C3781 #8C6C37 #378C41

split-complementary

#37578C #8C4137 #818C37

monochromatic

#142034 #263C60 #37578C #4972B7 #7594C9

Accessibility & contrast

On white

7.23

#37578C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#37578C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37578C

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37578C	#FFFFFF	#000000	##FFFFFF
##37578C	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415B8E

Deuteranopia (green-blind)

#36538B

Tritanopia (blue-blind)

#00636B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #37578c;
/* rgb */ color: rgb(55, 87, 140);
/* oklch */ color: oklch(45.8% 0.095 260.0);

Tailwind

colors: {
  custom: {
    50: '#7586ae',
    500: '#37578c',
    950: '#000000',
  },
}

SCSS

$custom: #37578c;
$custom-light: #7586ae;
$custom-dark: #000000;

JSON

{
  "hex": "#37578c",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 140
  },
  "hsl": {
    "h": 217.412,
    "s": 43.59,
    "l": 38.235
  },
  "oklch": {
    "l": 0.45821,
    "c": 0.09485,
    "h": 260
  },
  "luminance": 0.09522
}

Semantic roles & 50–950 ramp

primary

#37578C

secondary

#B1986D

accent

#A454D3

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #37578C

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

Preview Lab → · Contrast checker → · Palette generator →