#4240C1#4240C1

#4240C1 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 46.0% C 0.195 H 276.2°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#4240C1
RGB	rgb(66, 64, 193)
HSL	hsl(241, 51%, 50%)
HSV	hsv(241, 67%, 76%)
CMYK	cmyk(65.8%, 66.8%, 0%, 24.3%)
CIE-LAB	lab(35.35, 40.84, -67.19)
CIE-LCH	lch(35.35, 78.63, 301.30°)
OKLab	oklab(45.97% 0.021 -0.1939)
OKLCH	oklch(45.97% 0.195 276.2)
XYZ	xyz(13.7027, 8.6741, 51.3939)
Luminance	0.0867 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.42

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4240C1 #BFC140

analogous

#407FC1 #4240C1 #8240C1

triadic

#4240C1 #C14240 #40C142

tetradic

#4240C1 #C1407F #BFC140 #40C182

square

#4240C1 #C1407F #BFC140 #40C182

split-complementary

#4240C1 #C18240 #7FC140

monochromatic

#222166 #323094 #4240C1 #706ED0 #9D9CDF

Accessibility & contrast

On white

7.68

#4240C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#4240C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240C1

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240C1	#FFFFFF	#000000	##FFFFFF
##4240C1	1.00	7.68	2.73	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C5

Deuteranopia (green-blind)

#004DBF

Tritanopia (blue-blind)

#00627B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4240c1;
/* rgb */ color: rgb(66, 64, 193);
/* oklch */ color: oklch(46.0% 0.195 276.2);

Tailwind

colors: {
  custom: {
    50: '#8675d5',
    500: '#4240c1',
    950: '#000000',
  },
}

SCSS

$custom: #4240c1;
$custom-light: #8675d5;
$custom-dark: #000000;

JSON

{
  "hex": "#4240c1",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 193
  },
  "hsl": {
    "h": 240.93,
    "s": 50.988,
    "l": 50.392
  },
  "oklch": {
    "l": 0.45967,
    "c": 0.19503,
    "h": 276.2
  },
  "luminance": 0.08675
}

Semantic roles & 50–950 ramp

primary

#4240C1

secondary

#CACB92

accent

#DA4DD8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4240C1

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

Preview Lab → · Contrast checker → · Palette generator →