#4240CE#4240CE

#4240CE is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.2% C 0.211 H 275.3°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#4240CE
RGB	rgb(66, 64, 206)
HSL	hsl(241, 59%, 53%)
HSV	hsv(241, 69%, 81%)
CMYK	cmyk(68%, 68.9%, 0%, 19.2%)
CIE-LAB	lab(36.52, 45.13, -72.84)
CIE-LCH	lch(36.52, 85.69, 301.78°)
OKLab	oklab(47.17% 0.0194 -0.2104)
OKLCH	oklch(47.17% 0.211 275.3)
XYZ	xyz(15.2171, 9.2799, 59.3698)
Luminance	0.0928 (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

#4240CE #CCCE40

analogous

#4085CE #4240CE #8940CE

triadic

#4240CE #CE4240 #40CE42

tetradic

#4240CE #CE4085 #CCCE40 #40CE89

square

#4240CE #CE4085 #CCCE40 #40CE89

split-complementary

#4240CE #CE8940 #85CE40

monochromatic

#1F1E75 #2C2BA6 #4240CE #7271DA #A2A1E7

Accessibility & contrast

On white

7.35

#4240CE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#4240CE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240CE

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240CE	#FFFFFF	#000000	##FFFFFF
##4240CE	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CD2

Deuteranopia (green-blind)

#004FCB

Tritanopia (blue-blind)

#006782

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #4240ce;
/* rgb */ color: rgb(66, 64, 206);
/* oklch */ color: oklch(47.2% 0.211 275.3);

Tailwind

colors: {
  custom: {
    50: '#8976de',
    500: '#4240ce',
    950: '#000000',
  },
}

SCSS

$custom: #4240ce;
$custom-light: #8976de;
$custom-dark: #000000;

JSON

{
  "hex": "#4240ce",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 206
  },
  "hsl": {
    "h": 240.845,
    "s": 59.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.47168,
    "c": 0.21134,
    "h": 275.3
  },
  "luminance": 0.09281
}

Semantic roles & 50–950 ramp

primary

#4240CE

secondary

#D3D496

accent

#E245E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4240CE

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

Preview Lab → · Contrast checker → · Palette generator →