#37399A#37399A

#37399A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.155 H 276.1°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#37399A
RGB	rgb(55, 57, 154)
HSL	hsl(239, 47%, 41%)
HSV	hsv(239, 64%, 60%)
CMYK	cmyk(64.3%, 63%, 0%, 39.6%)
CIE-LAB	lab(29.59, 30.28, -53.35)
CIE-LCH	lch(29.59, 61.34, 299.58°)
OKLab	oklab(40.53% 0.0165 -0.1536)
OKLCH	oklch(40.53% 0.155 276.1)
XYZ	xyz(8.8695, 6.0708, 31.2700)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37399A #9A9837

analogous

#376A9A #37399A #66379A

triadic

#37399A #9A3739 #399A37

tetradic

#37399A #9A376A #9A9837 #379A66

square

#37399A #9A376A #9A9837 #379A66

split-complementary

#37399A #9A6637 #6A9A37

monochromatic

#171840 #27286D #37399A #4E51C0 #7B7DD0

Accessibility & contrast

On white

9.48

#37399A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#37399A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37399A

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37399A	#FFFFFF	#000000	##FFFFFF
##37399A	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9D

Deuteranopia (green-blind)

#004198

Tritanopia (blue-blind)

#005164

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #37399a;
/* rgb */ color: rgb(55, 57, 154);
/* oklch */ color: oklch(40.5% 0.155 276.1);

Tailwind

colors: {
  custom: {
    50: '#796fb9',
    500: '#37399a',
    950: '#000000',
  },
}

SCSS

$custom: #37399a;
$custom-light: #796fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#37399a",
  "rgb": {
    "r": 55,
    "g": 57,
    "b": 154
  },
  "hsl": {
    "h": 238.788,
    "s": 47.368,
    "l": 40.98
  },
  "oklch": {
    "l": 0.40533,
    "c": 0.15452,
    "h": 276.1
  },
  "luminance": 0.06072
}

Semantic roles & 50–950 ramp

primary

#37399A

secondary

#B9B874

accent

#D451D7

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #37399A

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

Preview Lab → · Contrast checker → · Palette generator →