#37579E#37579E

#37579E is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.0% C 0.121 H 264.1°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#37579E
RGB	rgb(55, 87, 158)
HSL	hsl(221, 48%, 42%)
HSV	hsv(221, 65%, 62%)
CMYK	cmyk(65.2%, 44.9%, 0%, 38%)
CIE-LAB	lab(38.01, 11.97, -42.16)
CIE-LCH	lch(38.01, 43.83, 285.85°)
OKLab	oklab(46.97% -0.0125 -0.1204)
OKLCH	oklch(46.97% 0.121 264.1)
XYZ	xyz(11.1531, 10.0962, 33.7021)
Luminance	0.1010 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37579E #9E7E37

analogous

#378B9E #37579E #4B379E

triadic

#37579E #9E3757 #579E37

tetradic

#37579E #9E378B #9E7E37 #379E4B

square

#37579E #9E378B #9E7E37 #379E4B

split-complementary

#37579E #9E4B37 #8B9E37

monochromatic

#172543 #273E71 #37579E #5074C2 #7D98D2

Accessibility & contrast

On white

6.96

#37579E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#37579E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #37579E

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37579E	#FFFFFF	#000000	##FFFFFF
##37579E	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355FA1

Deuteranopia (green-blind)

#25559D

Tritanopia (blue-blind)

#006773

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #37579e;
/* rgb */ color: rgb(55, 87, 158);
/* oklch */ color: oklch(47.0% 0.121 264.1);

Tailwind

colors: {
  custom: {
    50: '#7885bb',
    500: '#37579e',
    950: '#000000',
  },
}

SCSS

$custom: #37579e;
$custom-light: #7885bb;
$custom-dark: #000000;

JSON

{
  "hex": "#37579e",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 158
  },
  "hsl": {
    "h": 221.359,
    "s": 48.357,
    "l": 41.765
  },
  "oklch": {
    "l": 0.46969,
    "c": 0.12102,
    "h": 264.1
  },
  "luminance": 0.10097
}

Semantic roles & 50–950 ramp

primary

#37579E

secondary

#BBA676

accent

#AE50D8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #37579E

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

Preview Lab → · Contrast checker → · Palette generator →