#3743CA#3743CA

#3743CA is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 46.6% C 0.206 H 271.6°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#3743CA
RGB	rgb(55, 67, 202)
HSL	hsl(235, 58%, 50%)
HSV	hsv(235, 73%, 79%)
CMYK	cmyk(72.8%, 66.8%, 0%, 20.8%)
CIE-LAB	lab(36.16, 40.75, -71.14)
CIE-LCH	lch(36.16, 81.99, 299.80°)
OKLab	oklab(46.62% 0.0056 -0.2057)
OKLCH	oklch(46.62% 0.206 271.6)
XYZ	xyz(14.2398, 9.0893, 56.8696)
Luminance	0.0909 (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

#3743CA #CABE37

analogous

#378CCA #3743CA #7437CA

triadic

#3743CA #CA3743 #43CA37

tetradic

#3743CA #CA378C #CABE37 #37CA74

square

#3743CA #CA378C #CABE37 #37CA74

split-complementary

#3743CA #CA7437 #8CCA37

monochromatic

#1C236A #29329B #3743CA #6770D7 #989EE4

Accessibility & contrast

On white

7.45

#3743CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#3743CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3743CA

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3743CA	#FFFFFF	#000000	##FFFFFF
##3743CA	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCE

Deuteranopia (green-blind)

#004EC7

Tritanopia (blue-blind)

#006781

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3743ca;
/* rgb */ color: rgb(55, 67, 202);
/* oklch */ color: oklch(46.6% 0.206 271.6);

Tailwind

colors: {
  custom: {
    50: '#8377db',
    500: '#3743ca',
    950: '#000000',
  },
}

SCSS

$custom: #3743ca;
$custom-light: #8377db;
$custom-dark: #000000;

JSON

{
  "hex": "#3743ca",
  "rgb": {
    "r": 55,
    "g": 67,
    "b": 202
  },
  "hsl": {
    "h": 235.102,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.46621,
    "c": 0.20581,
    "h": 271.6
  },
  "luminance": 0.09091
}

Semantic roles & 50–950 ramp

primary

#3743CA

secondary

#CFCA8E

accent

#D546E1

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3743CA

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

Preview Lab → · Contrast checker → · Palette generator →