#4240C7#4240C7

#4240C7 is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.5% C 0.203 H 275.7°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#4240C7
RGB	rgb(66, 64, 199)
HSL	hsl(241, 55%, 52%)
HSV	hsv(241, 68%, 78%)
CMYK	cmyk(66.8%, 67.8%, 0%, 22%)
CIE-LAB	lab(35.88, 42.83, -69.82)
CIE-LCH	lch(35.88, 81.91, 301.53°)
OKLab	oklab(46.52% 0.0203 -0.2016)
OKLCH	oklch(46.52% 0.203 275.7)
XYZ	xyz(14.3856, 8.9473, 54.9906)
Luminance	0.0895 (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

#4240C7 #C5C740

analogous

#4082C7 #4240C7 #8640C7

triadic

#4240C7 #C74240 #40C742

tetradic

#4240C7 #C74082 #C5C740 #40C786

square

#4240C7 #C74082 #C5C740 #40C786

split-complementary

#4240C7 #C78640 #82C740

monochromatic

#21206D #2F2E9C #4240C7 #716FD5 #A09FE3

Accessibility & contrast

On white

7.53

#4240C7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#4240C7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240C7

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240C7	#FFFFFF	#000000	##FFFFFF
##4240C7	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ACB

Deuteranopia (green-blind)

#004EC4

Tritanopia (blue-blind)

#00647E

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #4240c7;
/* rgb */ color: rgb(66, 64, 199);
/* oklch */ color: oklch(46.5% 0.203 275.7);

Tailwind

colors: {
  custom: {
    50: '#8776d9',
    500: '#4240c7',
    950: '#000000',
  },
}

SCSS

$custom: #4240c7;
$custom-light: #8776d9;
$custom-dark: #000000;

JSON

{
  "hex": "#4240c7",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 199
  },
  "hsl": {
    "h": 240.889,
    "s": 54.656,
    "l": 51.569
  },
  "oklch": {
    "l": 0.46516,
    "c": 0.20262,
    "h": 275.7
  },
  "luminance": 0.08949
}

Semantic roles & 50–950 ramp

primary

#4240C7

secondary

#CECF94

accent

#DE4ADC

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4240C7

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

Preview Lab → · Contrast checker → · Palette generator →