#4240BE#4240BE

#4240BE is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.7% C 0.191 H 276.4°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#4240BE
RGB	rgb(66, 64, 190)
HSL	hsl(241, 50%, 50%)
HSV	hsv(241, 66%, 75%)
CMYK	cmyk(65.3%, 66.3%, 0%, 25.5%)
CIE-LAB	lab(35.09, 39.85, -65.86)
CIE-LCH	lch(35.09, 76.97, 301.17°)
OKLab	oklab(45.7% 0.0213 -0.19)
OKLCH	oklch(45.7% 0.191 276.4)
XYZ	xyz(13.3714, 8.5416, 49.6493)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.21

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4240BE #BCBE40

analogous

#407DBE #4240BE #8140BE

triadic

#4240BE #BE4240 #40BE42

tetradic

#4240BE #BE407D #BCBE40 #40BE81

square

#4240BE #BE407D #BCBE40 #40BE81

split-complementary

#4240BE #BE8140 #7DBE40

monochromatic

#222162 #323190 #4240BE #6F6DCE #9C9BDD

Accessibility & contrast

On white

7.75

#4240BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#4240BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240BE

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240BE	#FFFFFF	#000000	##FFFFFF
##4240BE	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C2

Deuteranopia (green-blind)

#004DBC

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4240be;
/* rgb */ color: rgb(66, 64, 190);
/* oklch */ color: oklch(45.7% 0.191 276.4);

Tailwind

colors: {
  custom: {
    50: '#8575d3',
    500: '#4240be',
    950: '#000000',
  },
}

SCSS

$custom: #4240be;
$custom-light: #8575d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4240be",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 190
  },
  "hsl": {
    "h": 240.952,
    "s": 49.606,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45696,
    "c": 0.19119,
    "h": 276.4
  },
  "luminance": 0.08543
}

Semantic roles & 50–950 ramp

primary

#4240BE

secondary

#C9C990

accent

#D94FD7

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4240BE

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

Preview Lab → · Contrast checker → · Palette generator →