#4243C4#4243C4

#4243C4 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.7% C 0.195 H 275.4°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#4243C4
RGB	rgb(66, 67, 196)
HSL	hsl(240, 52%, 51%)
HSV	hsv(240, 66%, 77%)
CMYK	cmyk(66.3%, 65.8%, 0%, 23.1%)
CIE-LAB	lab(36.28, 40.04, -67.41)
CIE-LCH	lch(36.28, 78.40, 300.71°)
OKLab	oklab(46.73% 0.0185 -0.1945)
OKLCH	oklch(46.73% 0.195 275.4)
XYZ	xyz(14.2145, 9.1568, 53.2322)
Luminance	0.0916 (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

#4243C4 #C4C342

analogous

#4284C4 #4243C4 #8242C4

triadic

#4243C4 #C44243 #43C442

tetradic

#4243C4 #C44284 #C4C342 #42C482

square

#4243C4 #C44284 #C4C342 #42C482

split-complementary

#4243C4 #C48242 #84C442

monochromatic

#21226A #303199 #4243C4 #7171D3 #9FA0E1

Accessibility & contrast

On white

7.42

#4243C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#4243C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243C4

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243C4	#FFFFFF	#000000	##FFFFFF
##4243C4	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC8

Deuteranopia (green-blind)

#004FC2

Tritanopia (blue-blind)

#00657D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4243c4;
/* rgb */ color: rgb(66, 67, 196);
/* oklch */ color: oklch(46.7% 0.195 275.4);

Tailwind

colors: {
  custom: {
    50: '#8678d7',
    500: '#4243c4',
    950: '#000000',
  },
}

SCSS

$custom: #4243c4;
$custom-light: #8678d7;
$custom-dark: #000000;

JSON

{
  "hex": "#4243c4",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 196
  },
  "hsl": {
    "h": 239.538,
    "s": 52.419,
    "l": 51.373
  },
  "oklch": {
    "l": 0.46727,
    "c": 0.19541,
    "h": 275.4
  },
  "luminance": 0.09158
}

Semantic roles & 50–950 ramp

primary

#4243C4

secondary

#CECD94

accent

#DB4CDC

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0D0914

muted

#7D7B83

Preview Lab

Preview with #4243C4

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

Preview Lab → · Contrast checker → · Palette generator →