#4640B7#4640B7

#4640B7 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.181 H 278.6°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#4640B7
RGB	rgb(70, 64, 183)
HSL	hsl(243, 48%, 48%)
HSV	hsv(243, 65%, 72%)
CMYK	cmyk(61.7%, 65%, 0%, 28.2%)
CIE-LAB	lab(34.78, 38.12, -62.23)
CIE-LCH	lch(34.78, 72.98, 301.49°)
OKLab	oklab(45.36% 0.027 -0.1792)
OKLCH	oklch(45.36% 0.181 278.6)
XYZ	xyz(12.9037, 8.3868, 45.7294)
Luminance	0.0839 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.41

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4640B7 #B1B740

analogous

#4075B7 #4640B7 #8140B7

triadic

#4640B7 #B74640 #40B746

tetradic

#4640B7 #B74075 #B1B740 #40B781

square

#4640B7 #B74075 #B1B740 #40B781

split-complementary

#4640B7 #B78140 #75B740

monochromatic

#23205C #35308A #4640B7 #6E69CB #9A97DB

Accessibility & contrast

On white

7.84

#4640B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4640B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4640B7

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4640B7	#FFFFFF	#000000	##FFFFFF
##4640B7	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BB

Deuteranopia (green-blind)

#004DB5

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4640b7;
/* rgb */ color: rgb(70, 64, 183);
/* oklch */ color: oklch(45.4% 0.181 278.6);

Tailwind

colors: {
  custom: {
    50: '#8675ce',
    500: '#4640b7',
    950: '#000000',
  },
}

SCSS

$custom: #4640b7;
$custom-light: #8675ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4640b7",
  "rgb": {
    "r": 70,
    "g": 64,
    "b": 183
  },
  "hsl": {
    "h": 243.025,
    "s": 48.178,
    "l": 48.431
  },
  "oklch": {
    "l": 0.4536,
    "c": 0.18128,
    "h": 278.6
  },
  "luminance": 0.08388
}

Semantic roles & 50–950 ramp

primary

#4640B7

secondary

#C3C68D

accent

#D850D1

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4640B7

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

Preview Lab → · Contrast checker → · Palette generator →