#37399F#37399F

#37399F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.0% C 0.161 H 275.8°. Best body text is #FFFFFF at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#37399F
RGB	rgb(55, 57, 159)
HSL	hsl(239, 49%, 42%)
HSV	hsv(239, 65%, 62%)
CMYK	cmyk(65.4%, 64.2%, 0%, 37.6%)
CIE-LAB	lab(30.01, 32.03, -55.70)
CIE-LCH	lch(30.01, 64.25, 299.90°)
OKLab	oklab(40.97% 0.0162 -0.1605)
OKLCH	oklch(40.97% 0.161 275.8)
XYZ	xyz(9.2946, 6.2409, 33.5090)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.96

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37399F #9F9D37

analogous

#376D9F #37399F #69379F

triadic

#37399F #9F3739 #399F37

tetradic

#37399F #9F376D #9F9D37 #379F69

square

#37399F #9F376D #9F9D37 #379F69

split-complementary

#37399F #9F6937 #6D9F37

monochromatic

#181844 #272972 #37399F #5153C3 #7E80D2

Accessibility & contrast

On white

9.34

#37399F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#37399F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37399F

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37399F	#FFFFFF	#000000	##FFFFFF
##37399F	1.00	9.34	2.25	9.34
#FFFFFF	9.34	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#00429D

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #37399f;
/* rgb */ color: rgb(55, 57, 159);
/* oklch */ color: oklch(41.0% 0.161 275.8);

Tailwind

colors: {
  custom: {
    50: '#7a6fbc',
    500: '#37399f',
    950: '#000000',
  },
}

SCSS

$custom: #37399f;
$custom-light: #7a6fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#37399f",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 159
  },
  "hsl": {
    "h": 238.846,
    "s": 48.598,
    "l": 41.961
  },
  "oklch": {
    "l": 0.40974,
    "c": 0.16135,
    "h": 275.8
  },
  "luminance": 0.06242
}

Semantic roles & 50–950 ramp

primary

#37399F

secondary

#BCBA76

accent

#D650D8

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #37399F

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

Preview Lab → · Contrast checker → · Palette generator →