#4240DD#4240DD

#4240DD is a mid, highly saturated blue. Relative luminance 0.100; OKLCH L 48.6% C 0.230 H 274.3°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#4240DD
RGB	rgb(66, 64, 221)
HSL	hsl(241, 70%, 56%)
HSV	hsv(241, 71%, 87%)
CMYK	cmyk(70.1%, 71%, 0%, 13.3%)
CIE-LAB	lab(37.92, 49.99, -79.18)
CIE-LCH	lch(37.92, 93.64, 302.27°)
OKLab	oklab(48.6% 0.0171 -0.2289)
OKLCH	oklch(48.6% 0.23 274.3)
XYZ	xyz(17.1270, 10.0438, 69.4286)
Luminance	0.1005 (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

#4240DD #DBDD40

analogous

#408CDD #4240DD #9040DD

triadic

#4240DD #DD4240 #40DD42

tetradic

#4240DD #DD408C #DBDD40 #40DD90

square

#4240DD #DD408C #DBDD40 #40DD90

split-complementary

#4240DD #DD9040 #8CDD40

monochromatic

#1A198A #2422BE #4240DD #7574E6 #A9A8EF

Accessibility & contrast

On white

6.98

#4240DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#4240DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4240DD

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240DD	#FFFFFF	#000000	##FFFFFF
##4240DD	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061E2

Deuteranopia (green-blind)

#0052DA

Tritanopia (blue-blind)

#006C8A

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4240dd;
/* rgb */ color: rgb(66, 64, 221);
/* oklch */ color: oklch(48.6% 0.230 274.3);

Tailwind

colors: {
  custom: {
    50: '#8c76e9',
    500: '#4240dd',
    950: '#000000',
  },
}

SCSS

$custom: #4240dd;
$custom-light: #8c76e9;
$custom-dark: #000000;

JSON

{
  "hex": "#4240dd",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 221
  },
  "hsl": {
    "h": 240.764,
    "s": 69.778,
    "l": 55.882
  },
  "oklch": {
    "l": 0.48598,
    "c": 0.22957,
    "h": 274.3
  },
  "luminance": 0.10046
}

Semantic roles & 50–950 ramp

primary

#4240DD

secondary

#DCDD9C

accent

#ED3BEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4240DD

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

Preview Lab → · Contrast checker → · Palette generator →