#4240C8#4240C8

#4240C8 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 46.6% C 0.204 H 275.7°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#4240C8
RGB	rgb(66, 64, 200)
HSL	hsl(241, 55%, 52%)
HSV	hsv(241, 68%, 78%)
CMYK	cmyk(67%, 68%, 0%, 21.6%)
CIE-LAB	lab(35.97, 43.16, -70.25)
CIE-LCH	lch(35.97, 82.45, 301.56°)
OKLab	oklab(46.61% 0.0202 -0.2029)
OKLCH	oklch(46.61% 0.204 275.7)
XYZ	xyz(14.5021, 8.9939, 55.6041)
Luminance	0.0900 (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

#4240C8 #C6C840

analogous

#4082C8 #4240C8 #8640C8

triadic

#4240C8 #C84240 #40C842

tetradic

#4240C8 #C84082 #C6C840 #40C886

square

#4240C8 #C84082 #C6C840 #40C886

split-complementary

#4240C8 #C88640 #82C840

monochromatic

#21206E #2F2D9D #4240C8 #7170D6 #A09FE3

Accessibility & contrast

On white

7.50

#4240C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#4240C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240C8

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240C8	#FFFFFF	#000000	##FFFFFF
##4240C8	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCC

Deuteranopia (green-blind)

#004EC5

Tritanopia (blue-blind)

#00647F

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4240c8;
/* rgb */ color: rgb(66, 64, 200);
/* oklch */ color: oklch(46.6% 0.204 275.7);

Tailwind

colors: {
  custom: {
    50: '#8776da',
    500: '#4240c8',
    950: '#000000',
  },
}

SCSS

$custom: #4240c8;
$custom-light: #8776da;
$custom-dark: #000000;

JSON

{
  "hex": "#4240c8",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 200
  },
  "hsl": {
    "h": 240.882,
    "s": 55.285,
    "l": 51.765
  },
  "oklch": {
    "l": 0.46609,
    "c": 0.20387,
    "h": 275.7
  },
  "luminance": 0.08995
}

Semantic roles & 50–950 ramp

primary

#4240C8

secondary

#CFD094

accent

#DF49DC

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4240C8

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

Preview Lab → · Contrast checker → · Palette generator →