#3437A8#3437A8

#3437A8 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.3% C 0.177 H 274.3°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#3437A8
RGB	rgb(52, 55, 168)
HSL	hsl(238, 53%, 43%)
HSV	hsv(238, 69%, 66%)
CMYK	cmyk(69%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(30.13, 36.01, -60.95)
CIE-LCH	lch(30.13, 70.79, 300.57°)
OKLab	oklab(41.25% 0.0133 -0.176)
OKLCH	oklch(41.25% 0.177 274.3)
XYZ	xyz(9.8479, 6.2887, 37.7331)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.13

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3437A8 #A8A534

analogous

#3471A8 #3437A8 #6B34A8

triadic

#3437A8 #A83437 #37A834

tetradic

#3437A8 #A83471 #A8A534 #34A86B

square

#3437A8 #A83471 #A8A534 #34A86B

split-complementary

#3437A8 #A86B34 #71A834

monochromatic

#17184B #262879 #3437A8 #5053C9 #7F81D7

Accessibility & contrast

On white

9.30

#3437A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#3437A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3437A8

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3437A8	#FFFFFF	#000000	##FFFFFF
##3437A8	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAC

Deuteranopia (green-blind)

#0042A6

Tritanopia (blue-blind)

#00556B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3437a8;
/* rgb */ color: rgb(52, 55, 168);
/* oklch */ color: oklch(41.3% 0.177 274.3);

Tailwind

colors: {
  custom: {
    50: '#7b6ec3',
    500: '#3437a8',
    950: '#000000',
  },
}

SCSS

$custom: #3437a8;
$custom-light: #7b6ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#3437a8",
  "rgb": {
    "r": 52,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 238.448,
    "s": 52.727,
    "l": 43.137
  },
  "oklch": {
    "l": 0.41251,
    "c": 0.17651,
    "h": 274.3
  },
  "luminance": 0.0629
}

Semantic roles & 50–950 ramp

primary

#3437A8

secondary

#C0BF77

accent

#D84CDC

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3437A8

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

Preview Lab → · Contrast checker → · Palette generator →