#4240D5#4240D5

#4240D5 is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.8% C 0.220 H 274.8°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#4240D5
RGB	rgb(66, 64, 213)
HSL	hsl(241, 64%, 54%)
HSV	hsv(241, 70%, 84%)
CMYK	cmyk(69%, 70%, 0%, 16.5%)
CIE-LAB	lab(37.17, 47.41, -75.82)
CIE-LCH	lch(37.17, 89.43, 302.02°)
OKLab	oklab(47.83% 0.0184 -0.2191)
OKLCH	oklch(47.83% 0.22 274.8)
XYZ	xyz(16.0864, 9.6276, 63.9485)
Luminance	0.0963 (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

#4240D5 #D3D540

analogous

#4089D5 #4240D5 #8C40D5

triadic

#4240D5 #D54240 #40D542

tetradic

#4240D5 #D54089 #D3D540 #40D58C

square

#4240D5 #D54089 #D3D540 #40D58C

split-complementary

#4240D5 #D58C40 #89D540

monochromatic

#1D1C7F #2927B1 #4240D5 #7472E0 #A5A4EB

Accessibility & contrast

On white

7.18

#4240D5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#4240D5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240D5

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240D5	#FFFFFF	#000000	##FFFFFF
##4240D5	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED9

Deuteranopia (green-blind)

#0051D2

Tritanopia (blue-blind)

#006986

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #4240d5;
/* rgb */ color: rgb(66, 64, 213);
/* oklch */ color: oklch(47.8% 0.220 274.8);

Tailwind

colors: {
  custom: {
    50: '#8a76e3',
    500: '#4240d5',
    950: '#000000',
  },
}

SCSS

$custom: #4240d5;
$custom-light: #8a76e3;
$custom-dark: #000000;

JSON

{
  "hex": "#4240d5",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 213
  },
  "hsl": {
    "h": 240.805,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.4783,
    "c": 0.21992,
    "h": 274.8
  },
  "luminance": 0.09629
}

Semantic roles & 50–950 ramp

primary

#4240D5

secondary

#D7D899

accent

#E741E5

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #4240D5

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

Preview Lab → · Contrast checker → · Palette generator →