#4239CF#4239CF

#4239CF is a mid, highly saturated blue. Relative luminance 0.086; OKLCH L 46.2% C 0.220 H 276.1°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#4239CF
RGB	rgb(66, 57, 207)
HSL	hsl(244, 61%, 52%)
HSV	hsv(244, 72%, 81%)
CMYK	cmyk(68.1%, 72.5%, 0%, 18.8%)
CIE-LAB	lab(35.18, 49.41, -75.63)
CIE-LCH	lch(35.18, 90.34, 303.16°)
OKLab	oklab(46.24% 0.0234 -0.2185)
OKLCH	oklch(46.24% 0.22 276.1)
XYZ	xyz(14.9687, 8.5881, 59.8882)
Luminance	0.0859 (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

#4239CF #C6CF39

analogous

#397BCF #4239CF #8D39CF

triadic

#4239CF #CF4239 #39CF42

tetradic

#4239CF #CF397B #C6CF39 #39CF8D

square

#4239CF #CF397B #C6CF39 #39CF8D

split-complementary

#4239CF #CF8D39 #7BCF39

monochromatic

#211C72 #2F28A3 #4239CF #716ADB #A09CE7

Accessibility & contrast

On white

7.73

#4239CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#4239CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239CF

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239CF	#FFFFFF	#000000	##FFFFFF
##4239CF	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059D3

Deuteranopia (green-blind)

#004CCC

Tritanopia (blue-blind)

#006381

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4239cf;
/* rgb */ color: rgb(66, 57, 207);
/* oklch */ color: oklch(46.2% 0.220 276.1);

Tailwind

colors: {
  custom: {
    50: '#8971df',
    500: '#4239cf',
    950: '#000000',
  },
}

SCSS

$custom: #4239cf;
$custom-light: #8971df;
$custom-dark: #000000;

JSON

{
  "hex": "#4239cf",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 207
  },
  "hsl": {
    "h": 243.6,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.46239,
    "c": 0.2198,
    "h": 276.1
  },
  "luminance": 0.08589
}

Semantic roles & 50–950 ramp

primary

#4239CF

secondary

#CFD391

accent

#E444DA

background

#F9F7FD

surface

#F2EDFB

border

#CCC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4239CF

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

Preview Lab → · Contrast checker → · Palette generator →