#3747CA#3747CA

#3747CA is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.3% C 0.201 H 270.9°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#3747CA
RGB	rgb(55, 71, 202)
HSL	hsl(233, 58%, 50%)
HSV	hsv(233, 73%, 79%)
CMYK	cmyk(72.8%, 64.9%, 0%, 20.8%)
CIE-LAB	lab(37.08, 38.28, -69.62)
CIE-LCH	lch(37.08, 79.46, 298.80°)
OKLab	oklab(47.3% 0.0031 -0.2013)
OKLCH	oklch(47.3% 0.201 270.9)
XYZ	xyz(14.4858, 9.5815, 56.9516)
Luminance	0.0958 (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

#3747CA #CABA37

analogous

#3791CA #3747CA #7037CA

triadic

#3747CA #CA3747 #47CA37

tetradic

#3747CA #CA3791 #CABA37 #37CA70

square

#3747CA #CA3791 #CABA37 #37CA70

split-complementary

#3747CA #CA7037 #91CA37

monochromatic

#1C256A #29359B #3747CA #6774D7 #98A0E4

Accessibility & contrast

On white

7.20

#3747CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#3747CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747CA

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747CA	#FFFFFF	#000000	##FFFFFF
##3747CA	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECE

Deuteranopia (green-blind)

#0050C8

Tritanopia (blue-blind)

#006A82

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3747ca;
/* rgb */ color: rgb(55, 71, 202);
/* oklch */ color: oklch(47.3% 0.201 270.9);

Tailwind

colors: {
  custom: {
    50: '#837adb',
    500: '#3747ca',
    950: '#000000',
  },
}

SCSS

$custom: #3747ca;
$custom-light: #837adb;
$custom-dark: #000000;

JSON

{
  "hex": "#3747ca",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 202
  },
  "hsl": {
    "h": 233.469,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.47295,
    "c": 0.20129,
    "h": 270.9
  },
  "luminance": 0.09583
}

Semantic roles & 50–950 ramp

primary

#3747CA

secondary

#CFC88E

accent

#D046E1

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3747CA

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

Preview Lab → · Contrast checker → · Palette generator →