#37439A#37439A

#37439A is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.4% C 0.141 H 272.9°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#37439A
RGB	rgb(55, 67, 154)
HSL	hsl(233, 47%, 41%)
HSV	hsv(233, 64%, 60%)
CMYK	cmyk(64.3%, 56.5%, 0%, 39.6%)
CIE-LAB	lab(32.17, 23.72, -49.16)
CIE-LCH	lch(32.17, 54.59, 295.76°)
OKLab	oklab(42.44% 0.0072 -0.1412)
OKLCH	oklch(42.44% 0.141 272.9)
XYZ	xyz(9.4135, 7.1588, 31.4513)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37439A #9A8E37

analogous

#37749A #37439A #5C379A

triadic

#37439A #9A3743 #439A37

tetradic

#37439A #9A3774 #9A8E37 #379A5C

square

#37439A #9A3774 #9A8E37 #379A5C

split-complementary

#37439A #9A5C37 #749A37

monochromatic

#171C40 #272F6D #37439A #4E5CC0 #7B86D0

Accessibility & contrast

On white

8.63

#37439A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#37439A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37439A

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37439A	#FFFFFF	#000000	##FFFFFF
##37439A	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509D

Deuteranopia (green-blind)

#004798

Tritanopia (blue-blind)

#005868

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #37439a;
/* rgb */ color: rgb(55, 67, 154);
/* oklch */ color: oklch(42.4% 0.141 272.9);

Tailwind

colors: {
  custom: {
    50: '#7977b8',
    500: '#37439a',
    950: '#000000',
  },
}

SCSS

$custom: #37439a;
$custom-light: #7977b8;
$custom-dark: #000000;

JSON

{
  "hex": "#37439a",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 154
  },
  "hsl": {
    "h": 232.727,
    "s": 47.368,
    "l": 40.98
  },
  "oklch": {
    "l": 0.42443,
    "c": 0.14142,
    "h": 272.9
  },
  "luminance": 0.0716
}

Semantic roles & 50–950 ramp

primary

#37439A

secondary

#B9B174

accent

#C751D7

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #37439A

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

Preview Lab → · Contrast checker → · Palette generator →