#4242BB#4242BB

#4242BB is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.8% C 0.185 H 276.2°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#4242BB
RGB	rgb(66, 66, 187)
HSL	hsl(240, 48%, 50%)
HSV	hsv(240, 65%, 73%)
CMYK	cmyk(64.7%, 64.7%, 0%, 26.7%)
CIE-LAB	lab(35.28, 37.63, -63.77)
CIE-LCH	lch(35.28, 74.04, 300.54°)
OKLab	oklab(45.76% 0.0201 -0.1839)
OKLCH	oklch(45.76% 0.185 276.2)
XYZ	xyz(13.1617, 8.6414, 47.9784)
Luminance	0.0864 (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

#4242BB #BBBB42

analogous

#427FBB #4242BB #7F42BB

triadic

#4242BB #BB4242 #42BB42

tetradic

#4242BB #BB427F #BBBB42 #42BB7F

square

#4242BB #BB427F #BBBB42 #42BB7F

split-complementary

#4242BB #BB7F42 #7FBB42

monochromatic

#222261 #32328E #4242BB #6E6ECC #9C9CDC

Accessibility & contrast

On white

7.70

#4242BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#4242BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4242BB

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4242BB	#FFFFFF	#000000	##FFFFFF
##4242BB	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BF

Deuteranopia (green-blind)

#004EB9

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4242bb;
/* rgb */ color: rgb(66, 66, 187);
/* oklch */ color: oklch(45.8% 0.185 276.2);

Tailwind

colors: {
  custom: {
    50: '#8577d0',
    500: '#4242bb',
    950: '#000000',
  },
}

SCSS

$custom: #4242bb;
$custom-light: #8577d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4242bb",
  "rgb": {
    "r": 66,
    "g": 66,
    "b": 187
  },
  "hsl": {
    "h": 240,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.45761,
    "c": 0.18496,
    "h": 276.2
  },
  "luminance": 0.08643
}

Semantic roles & 50–950 ramp

primary

#4242BB

secondary

#C8C891

accent

#D750D7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4242BB

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

Preview Lab → · Contrast checker → · Palette generator →