#4240D1#4240D1

#4240D1 is a mid, highly saturated blue. Relative luminance 0.094; OKLCH L 47.4% C 0.215 H 275.1°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#4240D1
RGB	rgb(66, 64, 209)
HSL	hsl(241, 61%, 54%)
HSV	hsv(241, 69%, 82%)
CMYK	cmyk(68.4%, 69.4%, 0%, 18%)
CIE-LAB	lab(36.79, 46.11, -74.13)
CIE-LCH	lch(36.79, 87.30, 301.88°)
OKLab	oklab(47.45% 0.0189 -0.2142)
OKLCH	oklch(47.45% 0.215 275.1)
XYZ	xyz(15.5850, 9.4270, 61.3075)
Luminance	0.0943 (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

#4240D1 #CFD140

analogous

#4086D1 #4240D1 #8A40D1

triadic

#4240D1 #D14240 #40D142

tetradic

#4240D1 #D14086 #CFD140 #40D18A

square

#4240D1 #D14086 #CFD140 #40D18A

split-complementary

#4240D1 #D18A40 #86D140

monochromatic

#1F1D79 #2B29AB #4240D1 #7371DD #A4A3E9

Accessibility & contrast

On white

7.28

#4240D1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#4240D1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240D1

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240D1	#FFFFFF	#000000	##FFFFFF
##4240D1	1.00	7.28	2.89	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DD5

Deuteranopia (green-blind)

#0050CE

Tritanopia (blue-blind)

#006884

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #4240d1;
/* rgb */ color: rgb(66, 64, 209);
/* oklch */ color: oklch(47.4% 0.215 275.1);

Tailwind

colors: {
  custom: {
    50: '#8976e0',
    500: '#4240d1',
    950: '#000000',
  },
}

SCSS

$custom: #4240d1;
$custom-light: #8976e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4240d1",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 209
  },
  "hsl": {
    "h": 240.828,
    "s": 61.181,
    "l": 53.529
  },
  "oklch": {
    "l": 0.4745,
    "c": 0.21502,
    "h": 275.1
  },
  "luminance": 0.09428
}

Semantic roles & 50–950 ramp

primary

#4240D1

secondary

#D5D597

accent

#E444E2

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4240D1

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

Preview Lab → · Contrast checker → · Palette generator →