#37559B#37559B

#37559B is a mid, moderate blue. Relative luminance 0.097; OKLCH L 46.3% C 0.119 H 264.7°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#37559B
RGB	rgb(55, 85, 155)
HSL	hsl(222, 48%, 41%)
HSV	hsv(222, 65%, 61%)
CMYK	cmyk(64.5%, 45.2%, 0%, 39.2%)
CIE-LAB	lab(37.25, 12.18, -41.58)
CIE-LCH	lch(37.25, 43.33, 286.33°)
OKLab	oklab(46.32% -0.011 -0.1187)
OKLCH	oklch(46.32% 0.119 264.7)
XYZ	xyz(10.7384, 9.6748, 32.3055)
Luminance	0.0968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37559B #9B7D37

analogous

#37879B #37559B #4B379B

triadic

#37559B #9B3755 #559B37

tetradic

#37559B #9B3787 #9B7D37 #379B4B

square

#37559B #9B3787 #9B7D37 #379B4B

split-complementary

#37559B #9B4B37 #879B37

monochromatic

#172341 #273C6E #37559B #4F71C0 #7C95D0

Accessibility & contrast

On white

7.15

#37559B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#37559B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37559B

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37559B	#FFFFFF	#000000	##FFFFFF
##37559B	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345D9E

Deuteranopia (green-blind)

#24539A

Tritanopia (blue-blind)

#006570

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #37559b;
/* rgb */ color: rgb(55, 85, 155);
/* oklch */ color: oklch(46.3% 0.119 264.7);

Tailwind

colors: {
  custom: {
    50: '#7884b9',
    500: '#37559b',
    950: '#000000',
  },
}

SCSS

$custom: #37559b;
$custom-light: #7884b9;
$custom-dark: #000000;

JSON

{
  "hex": "#37559b",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 155
  },
  "hsl": {
    "h": 222,
    "s": 47.619,
    "l": 41.176
  },
  "oklch": {
    "l": 0.46323,
    "c": 0.1192,
    "h": 264.7
  },
  "luminance": 0.09676
}

Semantic roles & 50–950 ramp

primary

#37559B

secondary

#BAA574

accent

#AF51D7

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0A11

muted

#7C7C80

Preview Lab

Preview with #37559B

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

Preview Lab → · Contrast checker → · Palette generator →