#4239DA#4239DA

#4239DA is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 47.3% C 0.233 H 275.3°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#4239DA
RGB	rgb(66, 57, 218)
HSL	hsl(243, 69%, 54%)
HSV	hsv(243, 74%, 85%)
CMYK	cmyk(69.7%, 73.9%, 0%, 14.5%)
CIE-LAB	lab(36.26, 52.87, -80.19)
CIE-LCH	lch(36.26, 96.05, 303.40°)
OKLab	oklab(47.33% 0.0213 -0.2318)
OKLCH	oklch(47.33% 0.233 275.3)
XYZ	xyz(16.3606, 9.1449, 67.2190)
Luminance	0.0915 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.62

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4239DA #D1DA39

analogous

#3981DA #4239DA #9339DA

triadic

#4239DA #DA4239 #39DA42

tetradic

#4239DA #DA3981 #D1DA39 #39DA93

square

#4239DA #DA3981 #D1DA39 #39DA93

split-complementary

#4239DA #DA9339 #81DA39

monochromatic

#1E1881 #2A22B4 #4239DA #736DE4 #A4A0ED

Accessibility & contrast

On white

7.42

#4239DA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#4239DA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239DA

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239DA	#FFFFFF	#000000	##FFFFFF
##4239DA	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CDF

Deuteranopia (green-blind)

#004ED7

Tritanopia (blue-blind)

#006887

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4239da;
/* rgb */ color: rgb(66, 57, 218);
/* oklch */ color: oklch(47.3% 0.233 275.3);

Tailwind

colors: {
  custom: {
    50: '#8c72e7',
    500: '#4239da',
    950: '#000000',
  },
}

SCSS

$custom: #4239da;
$custom-light: #8c72e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4239da",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 218
  },
  "hsl": {
    "h": 243.354,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.47331,
    "c": 0.23283,
    "h": 275.3
  },
  "luminance": 0.09146
}

Semantic roles & 50–950 ramp

primary

#4239DA

secondary

#D6DA95

accent

#EB3CE2

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4239DA

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

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