#3437A9#3437A9

#3437A9 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.3% C 0.178 H 274.3°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#3437A9
RGB	rgb(52, 55, 169)
HSL	hsl(238, 53%, 43%)
HSV	hsv(238, 69%, 66%)
CMYK	cmyk(69.2%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(30.22, 36.35, -61.40)
CIE-LCH	lch(30.22, 71.35, 300.63°)
OKLab	oklab(41.35% 0.0132 -0.1773)
OKLCH	oklch(41.35% 0.178 274.3)
XYZ	xyz(9.9414, 6.3261, 38.2256)
Luminance	0.0633 (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

#3437A9 #A9A634

analogous

#3471A9 #3437A9 #6C34A9

triadic

#3437A9 #A93437 #37A934

tetradic

#3437A9 #A93471 #A9A634 #34A96C

square

#3437A9 #A93471 #A9A634 #34A96C

split-complementary

#3437A9 #A96C34 #71A934

monochromatic

#17194B #26287A #3437A9 #5154C9 #8082D8

Accessibility & contrast

On white

9.27

#3437A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#3437A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437A9

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437A9	#FFFFFF	#000000	##FFFFFF
##3437A9	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAD

Deuteranopia (green-blind)

#0042A7

Tritanopia (blue-blind)

#00556B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3437a9;
/* rgb */ color: rgb(52, 55, 169);
/* oklch */ color: oklch(41.3% 0.178 274.3);

Tailwind

colors: {
  custom: {
    50: '#7b6ec4',
    500: '#3437a9',
    950: '#000000',
  },
}

SCSS

$custom: #3437a9;
$custom-light: #7b6ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3437a9",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 238.462,
    "s": 52.941,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41346,
    "c": 0.17783,
    "h": 274.3
  },
  "luminance": 0.06327
}

Semantic roles & 50–950 ramp

primary

#3437A9

secondary

#C1BF78

accent

#D94BDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3437A9

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

Preview Lab → · Contrast checker → · Palette generator →