#37578E#37578E

#37578E is a mid, moderate blue. Relative luminance 0.096; OKLCH L 45.9% C 0.098 H 260.6°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#37578E
RGB	rgb(55, 87, 142)
HSL	hsl(218, 44%, 39%)
HSV	hsv(218, 61%, 56%)
CMYK	cmyk(61.3%, 38.7%, 0%, 44.3%)
CIE-LAB	lab(37.08, 6.18, -34.00)
CIE-LCH	lch(37.08, 34.56, 280.30°)
OKLab	oklab(45.94% -0.016 -0.0964)
OKLCH	oklch(45.94% 0.098 260.6)
XYZ	xyz(9.8645, 9.5808, 26.9154)
Luminance	0.0958 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37578E #8E6E37

analogous

#37828E #37578E #42378E

triadic

#37578E #8E3757 #578E37

tetradic

#37578E #8E3782 #8E6E37 #378E42

square

#37578E #8E3782 #8E6E37 #378E42

split-complementary

#37578E #8E4237 #828E37

monochromatic

#152136 #263C62 #37578E #4972B9 #7695CA

Accessibility & contrast

On white

7.20

#37578E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#37578E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37578E

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37578E	#FFFFFF	#000000	##FFFFFF
##37578E	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#405C90

Deuteranopia (green-blind)

#34548D

Tritanopia (blue-blind)

#00636B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #37578e;
/* rgb */ color: rgb(55, 87, 142);
/* oklch */ color: oklch(45.9% 0.098 260.6);

Tailwind

colors: {
  custom: {
    50: '#7686af',
    500: '#37578e',
    950: '#000000',
  },
}

SCSS

$custom: #37578e;
$custom-light: #7686af;
$custom-dark: #000000;

JSON

{
  "hex": "#37578e",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 142
  },
  "hsl": {
    "h": 217.931,
    "s": 44.162,
    "l": 38.627
  },
  "oklch": {
    "l": 0.45942,
    "c": 0.09776,
    "h": 260.6
  },
  "luminance": 0.09582
}

Semantic roles & 50–950 ramp

primary

#37578E

secondary

#B3996E

accent

#A554D4

background

#F7F8FA

surface

#EDEFF4

border

#C8CACE

text

#090B10

muted

#7B7C7F

Preview Lab

Preview with #37578E

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

Preview Lab → · Contrast checker → · Palette generator →