#3437AC#3437AC

#3437AC is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.6% C 0.182 H 274.1°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#3437AC
RGB	rgb(52, 55, 172)
HSL	hsl(239, 54%, 44%)
HSV	hsv(239, 70%, 67%)
CMYK	cmyk(69.8%, 68%, 0%, 32.5%)
CIE-LAB	lab(30.50, 37.39, -62.75)
CIE-LCH	lch(30.50, 73.04, 300.79°)
OKLab	oklab(41.63% 0.0129 -0.1813)
OKLCH	oklch(41.63% 0.182 274.1)
XYZ	xyz(10.2263, 6.4400, 39.7259)
Luminance	0.0644 (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

#3437AC #ACA934

analogous

#3473AC #3437AC #6D34AC

triadic

#3437AC #AC3437 #37AC34

tetradic

#3437AC #AC3473 #ACA934 #34AC6D

square

#3437AC #AC3473 #ACA934 #34AC6D

split-complementary

#3437AC #AC6D34 #73AC34

monochromatic

#18194E #26287D #3437AC #5255CB #8184D9

Accessibility & contrast

On white

9.18

#3437AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3437AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437AC

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437AC	#FFFFFF	#000000	##FFFFFF
##3437AC	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB0

Deuteranopia (green-blind)

#0042AA

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3437ac;
/* rgb */ color: rgb(52, 55, 172);
/* oklch */ color: oklch(41.6% 0.182 274.1);

Tailwind

colors: {
  custom: {
    50: '#7c6ec6',
    500: '#3437ac',
    950: '#000000',
  },
}

SCSS

$custom: #3437ac;
$custom-light: #7c6ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3437ac",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 172
  },
  "hsl": {
    "h": 238.5,
    "s": 53.571,
    "l": 43.922
  },
  "oklch": {
    "l": 0.4163,
    "c": 0.18174,
    "h": 274.1
  },
  "luminance": 0.06441
}

Semantic roles & 50–950 ramp

primary

#3437AC

secondary

#C2C079

accent

#D94BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3437AC

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

Preview Lab → · Contrast checker → · Palette generator →