#4242CF#4242CF

#4242CF is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.6% C 0.210 H 274.9°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#4242CF
RGB	rgb(66, 66, 207)
HSL	hsl(240, 59%, 54%)
HSV	hsv(240, 68%, 81%)
CMYK	cmyk(68.1%, 68.1%, 0%, 18.8%)
CIE-LAB	lab(37.04, 44.29, -72.57)
CIE-LCH	lch(37.04, 85.02, 301.39°)
OKLab	oklab(47.57% 0.0179 -0.2096)
OKLCH	oklch(47.57% 0.21 274.9)
XYZ	xyz(15.4537, 9.5583, 60.0499)
Luminance	0.0956 (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

#4242CF #CFCF42

analogous

#4288CF #4242CF #8842CF

triadic

#4242CF #CF4242 #42CF42

tetradic

#4242CF #CF4288 #CFCF42 #42CF88

square

#4242CF #CF4288 #CFCF42 #42CF88

split-complementary

#4242CF #CF8842 #88CF42

monochromatic

#1F1F78 #2B2BA9 #4242CF #7373DB #A4A4E8

Accessibility & contrast

On white

7.21

#4242CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#4242CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4242CF

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4242CF	#FFFFFF	#000000	##FFFFFF
##4242CF	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED3

Deuteranopia (green-blind)

#0051CC

Tritanopia (blue-blind)

#006883

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #4242cf;
/* rgb */ color: rgb(66, 66, 207);
/* oklch */ color: oklch(47.6% 0.210 274.9);

Tailwind

colors: {
  custom: {
    50: '#8977df',
    500: '#4242cf',
    950: '#000000',
  },
}

SCSS

$custom: #4242cf;
$custom-light: #8977df;
$custom-dark: #000000;

JSON

{
  "hex": "#4242cf",
  "rgb": {
    "r": 66,
    "g": 66,
    "b": 207
  },
  "hsl": {
    "h": 240,
    "s": 59.494,
    "l": 53.529
  },
  "oklch": {
    "l": 0.4757,
    "c": 0.21041,
    "h": 274.9
  },
  "luminance": 0.0956
}

Semantic roles & 50–950 ramp

primary

#4242CF

secondary

#D5D598

accent

#E345E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4242CF

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

Preview Lab → · Contrast checker → · Palette generator →