#4240DF#4240DF

#4240DF is a mid, highly saturated blue. Relative luminance 0.102; OKLCH L 48.8% C 0.232 H 274.2°. Best body text is #FFFFFF at 6.93:1 contrast (WCAG AA passes).

Color values

HEX	#4240DF
RGB	rgb(66, 64, 223)
HSL	hsl(241, 71%, 56%)
HSV	hsv(241, 71%, 87%)
CMYK	cmyk(70.4%, 71.3%, 0%, 12.5%)
CIE-LAB	lab(38.11, 50.64, -80.00)
CIE-LCH	lch(38.11, 94.68, 302.33°)
OKLab	oklab(48.79% 0.0168 -0.2313)
OKLCH	oklch(48.79% 0.232 274.2)
XYZ	xyz(17.3950, 10.1511, 70.8404)
Luminance	0.1015 (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

#4240DF #DDDF40

analogous

#408EDF #4240DF #9240DF

triadic

#4240DF #DF4240 #40DF42

tetradic

#4240DF #DF408E #DDDF40 #40DF92

square

#4240DF #DF408E #DDDF40 #40DF92

split-complementary

#4240DF #DF9240 #8EDF40

monochromatic

#19188D #2220C1 #4240DF #7674E8 #AAA9F1

Accessibility & contrast

On white

6.93

#4240DF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#4240DF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4240DF

6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240DF	#FFFFFF	#000000	##FFFFFF
##4240DF	1.00	6.93	3.03	6.93
#FFFFFF	6.93	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061E4

Deuteranopia (green-blind)

#0052DC

Tritanopia (blue-blind)

#006D8B

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4240df;
/* rgb */ color: rgb(66, 64, 223);
/* oklch */ color: oklch(48.8% 0.232 274.2);

Tailwind

colors: {
  custom: {
    50: '#8c76ea',
    500: '#4240df',
    950: '#000000',
  },
}

SCSS

$custom: #4240df;
$custom-light: #8c76ea;
$custom-dark: #000000;

JSON

{
  "hex": "#4240df",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 223
  },
  "hsl": {
    "h": 240.755,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.48792,
    "c": 0.23196,
    "h": 274.2
  },
  "luminance": 0.10153
}

Semantic roles & 50–950 ramp

primary

#4240DF

secondary

#DDDE9D

accent

#EE3AEC

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4240DF

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

Preview Lab → · Contrast checker → · Palette generator →