#4240CD#4240CD

#4240CD is a mid, highly saturated blue. Relative luminance 0.092; OKLCH L 47.1% C 0.210 H 275.3°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#4240CD
RGB	rgb(66, 64, 205)
HSL	hsl(241, 59%, 53%)
HSV	hsv(241, 69%, 80%)
CMYK	cmyk(67.8%, 68.8%, 0%, 19.6%)
CIE-LAB	lab(36.43, 44.80, -72.42)
CIE-LCH	lch(36.43, 85.15, 301.74°)
OKLab	oklab(47.07% 0.0195 -0.2092)
OKLCH	oklch(47.07% 0.21 275.3)
XYZ	xyz(15.0960, 9.2314, 58.7321)
Luminance	0.0923 (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

#4240CD #CBCD40

analogous

#4084CD #4240CD #8840CD

triadic

#4240CD #CD4240 #40CD42

tetradic

#4240CD #CD4084 #CBCD40 #40CD88

square

#4240CD #CD4084 #CBCD40 #40CD88

split-complementary

#4240CD #CD8840 #84CD40

monochromatic

#201E74 #2D2BA5 #4240CD #7271DA #A2A1E6

Accessibility & contrast

On white

7.38

#4240CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#4240CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240CD

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240CD	#FFFFFF	#000000	##FFFFFF
##4240CD	1.00	7.38	2.85	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CD1

Deuteranopia (green-blind)

#004FCA

Tritanopia (blue-blind)

#006681

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #4240cd;
/* rgb */ color: rgb(66, 64, 205);
/* oklch */ color: oklch(47.1% 0.210 275.3);

Tailwind

colors: {
  custom: {
    50: '#8876dd',
    500: '#4240cd',
    950: '#000000',
  },
}

SCSS

$custom: #4240cd;
$custom-light: #8876dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4240cd",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 205
  },
  "hsl": {
    "h": 240.851,
    "s": 58.506,
    "l": 52.745
  },
  "oklch": {
    "l": 0.47074,
    "c": 0.2101,
    "h": 275.3
  },
  "luminance": 0.09233
}

Semantic roles & 50–950 ramp

primary

#4240CD

secondary

#D2D396

accent

#E246E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4240CD

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

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