#4239CC#4239CC

#4239CC is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.9% C 0.216 H 276.4°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#4239CC
RGB	rgb(66, 57, 204)
HSL	hsl(244, 59%, 51%)
HSV	hsv(244, 72%, 80%)
CMYK	cmyk(67.6%, 72.1%, 0%, 20%)
CIE-LAB	lab(34.89, 48.46, -74.36)
CIE-LCH	lch(34.89, 88.76, 303.09°)
OKLab	oklab(45.95% 0.024 -0.2149)
OKLCH	oklch(45.95% 0.216 276.4)
XYZ	xyz(14.6054, 8.4428, 57.9750)
Luminance	0.0844 (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

#4239CC #C3CC39

analogous

#3979CC #4239CC #8B39CC

triadic

#4239CC #CC4239 #39CC42

tetradic

#4239CC #CC3979 #C3CC39 #39CC8B

square

#4239CC #CC3979 #C3CC39 #39CC8B

split-complementary

#4239CC #CC8B39 #79CC39

monochromatic

#211C6E #30299F #4239CC #706AD9 #9F9AE5

Accessibility & contrast

On white

7.81

#4239CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#4239CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239CC

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239CC	#FFFFFF	#000000	##FFFFFF
##4239CC	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D0

Deuteranopia (green-blind)

#004CC9

Tritanopia (blue-blind)

#00627F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4239cc;
/* rgb */ color: rgb(66, 57, 204);
/* oklch */ color: oklch(45.9% 0.216 276.4);

Tailwind

colors: {
  custom: {
    50: '#8971dd',
    500: '#4239cc',
    950: '#000000',
  },
}

SCSS

$custom: #4239cc;
$custom-light: #8971dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4239cc",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 204
  },
  "hsl": {
    "h": 243.673,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.45945,
    "c": 0.21621,
    "h": 276.4
  },
  "luminance": 0.08444
}

Semantic roles & 50–950 ramp

primary

#4239CC

secondary

#CDD190

accent

#E246D9

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4239CC

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

Preview Lab → · Contrast checker → · Palette generator →