#4640B8#4640B8

#4640B8 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.183 H 278.5°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#4640B8
RGB	rgb(70, 64, 184)
HSL	hsl(243, 48%, 49%)
HSV	hsv(243, 65%, 72%)
CMYK	cmyk(62%, 65.2%, 0%, 27.8%)
CIE-LAB	lab(34.86, 38.44, -62.68)
CIE-LCH	lch(34.86, 73.53, 301.52°)
OKLab	oklab(45.45% 0.0269 -0.1806)
OKLCH	oklch(45.45% 0.183 278.5)
XYZ	xyz(13.0081, 8.4286, 46.2795)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 1.44

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4640B8 #B2B840

analogous

#4076B8 #4640B8 #8240B8

triadic

#4640B8 #B84640 #40B846

tetradic

#4640B8 #B84076 #B2B840 #40B882

square

#4640B8 #B84076 #B2B840 #40B882

split-complementary

#4640B8 #B88240 #76B840

monochromatic

#23205D #35308B #4640B8 #6F6ACB #9B97DB

Accessibility & contrast

On white

7.82

#4640B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#4640B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4640B8

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4640B8	#FFFFFF	#000000	##FFFFFF
##4640B8	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BC

Deuteranopia (green-blind)

#004DB6

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4640b8;
/* rgb */ color: rgb(70, 64, 184);
/* oklch */ color: oklch(45.4% 0.183 278.5);

Tailwind

colors: {
  custom: {
    50: '#8675ce',
    500: '#4640b8',
    950: '#000000',
  },
}

SCSS

$custom: #4640b8;
$custom-light: #8675ce;
$custom-dark: #000000;

JSON

{
  "hex": "#4640b8",
  "rgb": {
    "r": 70,
    "g": 64,
    "b": 184
  },
  "hsl": {
    "h": 243,
    "s": 48.387,
    "l": 48.627
  },
  "oklch": {
    "l": 0.45447,
    "c": 0.18258,
    "h": 278.5
  },
  "luminance": 0.0843
}

Semantic roles & 50–950 ramp

primary

#4640B8

secondary

#C4C78D

accent

#D850D1

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #4640B8

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

Preview Lab → · Contrast checker → · Palette generator →