#4239C7#4239C7

#4239C7 is a mid, highly saturated blue. Relative luminance 0.082; OKLCH L 45.5% C 0.210 H 276.8°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#4239C7
RGB	rgb(66, 57, 199)
HSL	hsl(244, 56%, 50%)
HSV	hsv(244, 71%, 78%)
CMYK	cmyk(66.8%, 71.4%, 0%, 22%)
CIE-LAB	lab(34.41, 46.87, -72.24)
CIE-LCH	lch(34.41, 86.11, 302.98°)
OKLab	oklab(45.46% 0.0249 -0.2087)
OKLCH	oklch(45.46% 0.21 276.8)
XYZ	xyz(14.0153, 8.2068, 54.8672)
Luminance	0.0821 (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

#4239C7 #BEC739

analogous

#3977C7 #4239C7 #8939C7

triadic

#4239C7 #C74239 #39C742

tetradic

#4239C7 #C73977 #BEC739 #39C789

square

#4239C7 #C73977 #BEC739 #39C789

split-complementary

#4239C7 #C78939 #77C739

monochromatic

#221D68 #322B98 #4239C7 #7069D4 #9D98E2

Accessibility & contrast

On white

7.95

#4239C7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#4239C7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239C7

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239C7	#FFFFFF	#000000	##FFFFFF
##4239C7	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CB

Deuteranopia (green-blind)

#004BC4

Tritanopia (blue-blind)

#00607C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4239c7;
/* rgb */ color: rgb(66, 57, 199);
/* oklch */ color: oklch(45.5% 0.210 276.8);

Tailwind

colors: {
  custom: {
    50: '#8871d9',
    500: '#4239c7',
    950: '#000000',
  },
}

SCSS

$custom: #4239c7;
$custom-light: #8871d9;
$custom-dark: #000000;

JSON

{
  "hex": "#4239c7",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 199
  },
  "hsl": {
    "h": 243.803,
    "s": 55.906,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45459,
    "c": 0.21014,
    "h": 276.8
  },
  "luminance": 0.08208
}

Semantic roles & 50–950 ramp

primary

#4239C7

secondary

#CACE8E

accent

#DF49D6

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4239C7

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

Preview Lab → · Contrast checker → · Palette generator →