#3437A4#3437A4

#3437A4 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.9% C 0.171 H 274.6°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#3437A4
RGB	rgb(52, 55, 164)
HSL	hsl(238, 52%, 42%)
HSV	hsv(238, 68%, 64%)
CMYK	cmyk(68.3%, 66.5%, 0%, 35.7%)
CIE-LAB	lab(29.77, 34.61, -59.13)
CIE-LCH	lch(29.77, 68.52, 300.34°)
OKLab	oklab(40.88% 0.0137 -0.1707)
OKLCH	oklch(40.88% 0.171 274.6)
XYZ	xyz(9.4810, 6.1419, 35.8006)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.58

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3437A4 #A4A134

analogous

#346FA4 #3437A4 #6934A4

triadic

#3437A4 #A43437 #37A434

tetradic

#3437A4 #A4346F #A4A134 #34A469

square

#3437A4 #A4346F #A4A134 #34A469

split-complementary

#3437A4 #A46934 #6FA434

monochromatic

#171847 #252776 #3437A4 #4E51C7 #7D7FD6

Accessibility & contrast

On white

9.42

#3437A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#3437A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437A4

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437A4	#FFFFFF	#000000	##FFFFFF
##3437A4	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA7

Deuteranopia (green-blind)

#0041A2

Tritanopia (blue-blind)

#005468

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3437a4;
/* rgb */ color: rgb(52, 55, 164);
/* oklch */ color: oklch(40.9% 0.171 274.6);

Tailwind

colors: {
  custom: {
    50: '#7a6ec0',
    500: '#3437a4',
    950: '#000000',
  },
}

SCSS

$custom: #3437a4;
$custom-light: #7a6ec0;
$custom-dark: #000000;

JSON

{
  "hex": "#3437a4",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 164
  },
  "hsl": {
    "h": 238.393,
    "s": 51.852,
    "l": 42.353
  },
  "oklch": {
    "l": 0.40877,
    "c": 0.17124,
    "h": 274.6
  },
  "luminance": 0.06143
}

Semantic roles & 50–950 ramp

primary

#3437A4

secondary

#BFBD75

accent

#D74CDB

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3437A4

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

Preview Lab → · Contrast checker → · Palette generator →