#4239C8#4239C8

#4239C8 is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.6% C 0.211 H 276.7°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#4239C8
RGB	rgb(66, 57, 200)
HSL	hsl(244, 57%, 50%)
HSV	hsv(244, 72%, 78%)
CMYK	cmyk(67%, 71.5%, 0%, 21.6%)
CIE-LAB	lab(34.51, 47.19, -72.67)
CIE-LCH	lch(34.51, 86.64, 303.00°)
OKLab	oklab(45.56% 0.0247 -0.2099)
OKLCH	oklch(45.56% 0.211 276.7)
XYZ	xyz(14.1318, 8.2534, 55.4807)
Luminance	0.0825 (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

#4239C8 #BFC839

analogous

#3978C8 #4239C8 #8939C8

triadic

#4239C8 #C84239 #39C842

tetradic

#4239C8 #C83978 #BFC839 #39C889

square

#4239C8 #C83978 #BFC839 #39C889

split-complementary

#4239C8 #C88939 #78C839

monochromatic

#221D69 #322B99 #4239C8 #7069D5 #9D99E3

Accessibility & contrast

On white

7.92

#4239C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#4239C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239C8

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239C8	#FFFFFF	#000000	##FFFFFF
##4239C8	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CC

Deuteranopia (green-blind)

#004BC5

Tritanopia (blue-blind)

#00617D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4239c8;
/* rgb */ color: rgb(66, 57, 200);
/* oklch */ color: oklch(45.6% 0.211 276.7);

Tailwind

colors: {
  custom: {
    50: '#8871da',
    500: '#4239c8',
    950: '#000000',
  },
}

SCSS

$custom: #4239c8;
$custom-light: #8871da;
$custom-dark: #000000;

JSON

{
  "hex": "#4239c8",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 200
  },
  "hsl": {
    "h": 243.776,
    "s": 56.522,
    "l": 50.392
  },
  "oklch": {
    "l": 0.45556,
    "c": 0.21136,
    "h": 276.7
  },
  "luminance": 0.08255
}

Semantic roles & 50–950 ramp

primary

#4239C8

secondary

#CACE8F

accent

#E048D6

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4239C8

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

Preview Lab → · Contrast checker → · Palette generator →