#37399E#37399E

#37399E is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.9% C 0.160 H 275.8°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#37399E
RGB	rgb(55, 57, 158)
HSL	hsl(239, 48%, 42%)
HSV	hsv(239, 65%, 62%)
CMYK	cmyk(65.2%, 63.9%, 0%, 38%)
CIE-LAB	lab(29.93, 31.68, -55.23)
CIE-LCH	lch(29.93, 63.67, 299.84°)
OKLab	oklab(40.89% 0.0163 -0.1592)
OKLCH	oklch(40.89% 0.16 275.8)
XYZ	xyz(9.2082, 6.2063, 33.0538)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.09

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37399E #9E9C37

analogous

#376D9E #37399E #69379E

triadic

#37399E #9E3739 #399E37

tetradic

#37399E #9E376D #9E9C37 #379E69

square

#37399E #9E376D #9E9C37 #379E69

split-complementary

#37399E #9E6937 #6D9E37

monochromatic

#171843 #272971 #37399E #5052C2 #7D7FD2

Accessibility & contrast

On white

9.37

#37399E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#37399E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37399E

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37399E	#FFFFFF	#000000	##FFFFFF
##37399E	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#00429C

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #37399e;
/* rgb */ color: rgb(55, 57, 158);
/* oklch */ color: oklch(40.9% 0.160 275.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#37399e",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 158
  },
  "hsl": {
    "h": 238.835,
    "s": 48.357,
    "l": 41.765
  },
  "oklch": {
    "l": 0.40885,
    "c": 0.16,
    "h": 275.8
  },
  "luminance": 0.06207
}

Semantic roles & 50–950 ramp

primary

#37399E

secondary

#BBBA76

accent

#D550D8

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #37399E

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

Preview Lab → · Contrast checker → · Palette generator →