#3437BA#3437BA

#3437BA is a dark, vivid blue. Relative luminance 0.070; OKLCH L 43.0% C 0.200 H 273.2°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#3437BA
RGB	rgb(52, 55, 186)
HSL	hsl(239, 56%, 47%)
HSV	hsv(239, 72%, 73%)
CMYK	cmyk(72%, 70.4%, 0%, 27.1%)
CIE-LAB	lab(31.82, 42.19, -68.90)
CIE-LCH	lch(31.82, 80.79, 301.48°)
OKLab	oklab(42.99% 0.0111 -0.1992)
OKLCH	oklch(42.99% 0.2 273.2)
XYZ	xyz(11.6423, 7.0065, 47.1837)
Luminance	0.0701 (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

#3437BA #BAB734

analogous

#347ABA #3437BA #7434BA

triadic

#3437BA #BA3437 #37BA34

tetradic

#3437BA #BA347A #BAB734 #34BA74

square

#3437BA #BA347A #BAB734 #34BA74

split-complementary

#3437BA #BA7434 #7ABA34

monochromatic

#191B5A #27298A #3437BA #5A5DD1 #8A8CDE

Accessibility & contrast

On white

8.74

#3437BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3437BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437BA

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437BA	#FFFFFF	#000000	##FFFFFF
##3437BA	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BE

Deuteranopia (green-blind)

#0044B8

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3437ba;
/* rgb */ color: rgb(52, 55, 186);
/* oklch */ color: oklch(43.0% 0.200 273.2);

Tailwind

colors: {
  custom: {
    50: '#7f6fd0',
    500: '#3437ba',
    950: '#000000',
  },
}

SCSS

$custom: #3437ba;
$custom-light: #7f6fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3437ba",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 186
  },
  "hsl": {
    "h": 238.657,
    "s": 56.303,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42988,
    "c": 0.19956,
    "h": 273.2
  },
  "luminance": 0.07008
}

Semantic roles & 50–950 ramp

primary

#3437BA

secondary

#C8C781

accent

#DC48E0

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3437BA

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

Preview Lab → · Contrast checker → · Palette generator →