#4637BB#4637BB

#4637BB is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.3% C 0.197 H 279.8°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#4637BB
RGB	rgb(70, 55, 187)
HSL	hsl(247, 55%, 47%)
HSV	hsv(247, 71%, 73%)
CMYK	cmyk(62.6%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(33.18, 44.69, -67.20)
CIE-LCH	lch(33.18, 80.71, 303.62°)
OKLab	oklab(44.32% 0.0336 -0.1938)
OKLCH	oklch(44.32% 0.197 279.8)
XYZ	xyz(12.8588, 7.6213, 47.7975)
Luminance	0.0762 (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

#4637BB #ACBB37

analogous

#376ABB #4637BB #8837BB

triadic

#4637BB #BB4637 #37BB46

tetradic

#4637BB #BB376A #ACBB37 #37BB88

square

#4637BB #BB376A #ACBB37 #37BB88

split-complementary

#4637BB #BB8837 #6ABB37

monochromatic

#231B5C #34298C #4637BB #6C5FD0 #988EDE

Accessibility & contrast

On white

8.32

#4637BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#4637BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4637BB

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4637BB	#FFFFFF	#000000	##FFFFFF
##4637BB	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4637bb;
/* rgb */ color: rgb(70, 55, 187);
/* oklch */ color: oklch(44.3% 0.197 279.8);

Tailwind

colors: {
  custom: {
    50: '#8770d1',
    500: '#4637bb',
    950: '#000000',
  },
}

SCSS

$custom: #4637bb;
$custom-light: #8770d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4637bb",
  "rgb": {
    "r": 70,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 246.818,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44318,
    "c": 0.19672,
    "h": 279.8
  },
  "luminance": 0.07622
}

Semantic roles & 50–950 ramp

primary

#4637BB

secondary

#C1C985

accent

#DE4ACD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #4637BB

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

Preview Lab → · Contrast checker → · Palette generator →