#3437BE#3437BE

#3437BE is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.4% C 0.205 H 273.0°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#3437BE
RGB	rgb(52, 55, 190)
HSL	hsl(239, 57%, 47%)
HSV	hsv(239, 73%, 75%)
CMYK	cmyk(72.6%, 71.1%, 0%, 25.5%)
CIE-LAB	lab(32.21, 43.54, -70.62)
CIE-LCH	lch(32.21, 82.96, 301.66°)
OKLab	oklab(43.39% 0.0105 -0.2043)
OKLCH	oklch(43.39% 0.205 273)
XYZ	xyz(12.0735, 7.1789, 49.4546)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3437BE #BEBB34

analogous

#347CBE #3437BE #7634BE

triadic

#3437BE #BE3437 #37BE34

tetradic

#3437BE #BE347C #BEBB34 #34BE76

square

#3437BE #BE347C #BEBB34 #34BE76

split-complementary

#3437BE #BE7634 #7CBE34

monochromatic

#1A1B5E #27298E #3437BE #5D5FD3 #8D8EE0

Accessibility & contrast

On white

8.62

#3437BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3437BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437BE

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437BE	#FFFFFF	#000000	##FFFFFF
##3437BE	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C2

Deuteranopia (green-blind)

#0045BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3437be;
/* rgb */ color: rgb(52, 55, 190);
/* oklch */ color: oklch(43.4% 0.205 273.0);

Tailwind

colors: {
  custom: {
    50: '#806fd3',
    500: '#3437be',
    950: '#000000',
  },
}

SCSS

$custom: #3437be;
$custom-light: #806fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3437be",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 190
  },
  "hsl": {
    "h": 238.696,
    "s": 57.025,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43385,
    "c": 0.20453,
    "h": 273
  },
  "luminance": 0.0718
}

Semantic roles & 50–950 ramp

primary

#3437BE

secondary

#CAC984

accent

#DD48E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3437BE

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

Preview Lab → · Contrast checker → · Palette generator →