#4240DA#4240DA

#4240DA is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 48.3% C 0.226 H 274.5°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#4240DA
RGB	rgb(66, 64, 218)
HSL	hsl(241, 68%, 55%)
HSV	hsv(241, 71%, 85%)
CMYK	cmyk(69.7%, 70.6%, 0%, 14.5%)
CIE-LAB	lab(37.64, 49.03, -77.93)
CIE-LCH	lch(37.64, 92.07, 302.18°)
OKLab	oklab(48.31% 0.0176 -0.2253)
OKLCH	oklch(48.31% 0.226 274.5)
XYZ	xyz(16.7309, 9.8854, 67.3424)
Luminance	0.0989 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.33

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4240DA #D8DA40

analogous

#408BDA #4240DA #8F40DA

triadic

#4240DA #DA4240 #40DA42

tetradic

#4240DA #DA408B #D8DA40 #40DA8F

square

#4240DA #DA408B #D8DA40 #40DA8F

split-complementary

#4240DA #DA8F40 #8BDA40

monochromatic

#1B1A86 #2624B9 #4240DA #7573E4 #A7A7EE

Accessibility & contrast

On white

7.05

#4240DA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#4240DA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240DA

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240DA	#FFFFFF	#000000	##FFFFFF
##4240DA	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060DF

Deuteranopia (green-blind)

#0051D7

Tritanopia (blue-blind)

#006B89

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4240da;
/* rgb */ color: rgb(66, 64, 218);
/* oklch */ color: oklch(48.3% 0.226 274.5);

Tailwind

colors: {
  custom: {
    50: '#8b76e7',
    500: '#4240da',
    950: '#000000',
  },
}

SCSS

$custom: #4240da;
$custom-light: #8b76e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4240da",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 218
  },
  "hsl": {
    "h": 240.779,
    "s": 67.544,
    "l": 55.294
  },
  "oklch": {
    "l": 0.48309,
    "c": 0.22598,
    "h": 274.5
  },
  "luminance": 0.09887
}

Semantic roles & 50–950 ramp

primary

#4240DA

secondary

#DADB9B

accent

#EA3DE8

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4240DA

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

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