#4242E0#4242E0

#4242E0 is a mid, highly saturated blue. Relative luminance 0.104; OKLCH L 49.2% C 0.231 H 273.9°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#4242E0
RGB	rgb(66, 66, 224)
HSL	hsl(240, 72%, 57%)
HSV	hsv(240, 71%, 88%)
CMYK	cmyk(70.5%, 70.5%, 0%, 12.2%)
CIE-LAB	lab(38.61, 49.84, -79.75)
CIE-LCH	lch(38.61, 94.04, 302.00°)
OKLab	oklab(49.18% 0.0156 -0.2306)
OKLCH	oklch(49.18% 0.231 273.9)
XYZ	xyz(17.6450, 10.4348, 71.5908)
Luminance	0.1044 (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

#4242E0 #E0E042

analogous

#4291E0 #4242E0 #9142E0

triadic

#4242E0 #E04242 #42E042

tetradic

#4242E0 #E04291 #E0E042 #42E091

square

#4242E0 #E04291 #E0E042 #42E091

split-complementary

#4242E0 #E09142 #91E042

monochromatic

#181890 #2020C5 #4242E0 #7777E9 #ABABF1

Accessibility & contrast

On white

6.80

#4242E0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#4242E0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4242E0

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4242E0	#FFFFFF	#000000	##FFFFFF
##4242E0	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062E5

Deuteranopia (green-blind)

#0053DD

Tritanopia (blue-blind)

#006E8D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #4242e0;
/* rgb */ color: rgb(66, 66, 224);
/* oklch */ color: oklch(49.2% 0.231 273.9);

Tailwind

colors: {
  custom: {
    50: '#8c78eb',
    500: '#4242e0',
    950: '#000000',
  },
}

SCSS

$custom: #4242e0;
$custom-light: #8c78eb;
$custom-dark: #000000;

JSON

{
  "hex": "#4242e0",
  "rgb": {
    "r": 66,
    "g": 66,
    "b": 224
  },
  "hsl": {
    "h": 240,
    "s": 71.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.49178,
    "c": 0.23115,
    "h": 273.9
  },
  "luminance": 0.10436
}

Semantic roles & 50–950 ramp

primary

#4242E0

secondary

#DFDF9F

accent

#EF39EF

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4242E0

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

Preview Lab → · Contrast checker → · Palette generator →