#4240BD#4240BD

#4240BD is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.6% C 0.190 H 276.5°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#4240BD
RGB	rgb(66, 64, 189)
HSL	hsl(241, 49%, 50%)
HSV	hsv(241, 66%, 74%)
CMYK	cmyk(65.1%, 66.1%, 0%, 25.9%)
CIE-LAB	lab(35.00, 39.51, -65.41)
CIE-LCH	lch(35.00, 76.42, 301.13°)
OKLab	oklab(45.61% 0.0214 -0.1887)
OKLCH	oklch(45.61% 0.19 276.5)
XYZ	xyz(13.2625, 8.4980, 49.0756)
Luminance	0.0850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.15

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4240BD #BBBD40

analogous

#407DBD #4240BD #8140BD

triadic

#4240BD #BD4240 #40BD42

tetradic

#4240BD #BD407D #BBBD40 #40BD81

square

#4240BD #BD407D #BBBD40 #40BD81

split-complementary

#4240BD #BD8140 #7DBD40

monochromatic

#222162 #32318F #4240BD #6E6DCD #9C9ADD

Accessibility & contrast

On white

7.78

#4240BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#4240BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4240BD

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4240BD	#FFFFFF	#000000	##FFFFFF
##4240BD	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C1

Deuteranopia (green-blind)

#004DBB

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4240bd;
/* rgb */ color: rgb(66, 64, 189);
/* oklch */ color: oklch(45.6% 0.190 276.5);

Tailwind

colors: {
  custom: {
    50: '#8575d2',
    500: '#4240bd',
    950: '#000000',
  },
}

SCSS

$custom: #4240bd;
$custom-light: #8575d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4240bd",
  "rgb": {
    "r": 66,
    "g": 64,
    "b": 189
  },
  "hsl": {
    "h": 240.96,
    "s": 49.407,
    "l": 49.608
  },
  "oklch": {
    "l": 0.45606,
    "c": 0.18991,
    "h": 276.5
  },
  "luminance": 0.08499
}

Semantic roles & 50–950 ramp

primary

#4240BD

secondary

#C8C990

accent

#D94FD7

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4240BD

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

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