#4666BB#4666BB

#4666BB is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.9% C 0.138 H 266.3°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#4666BB
RGB	rgb(70, 102, 187)
HSL	hsl(224, 46%, 50%)
HSV	hsv(224, 63%, 73%)
CMYK	cmyk(62.6%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(44.79, 15.45, -48.38)
CIE-LCH	lch(44.79, 50.79, 287.71°)
OKLab	oklab(52.95% -0.009 -0.1381)
OKLCH	oklch(52.95% 0.138 266.3)
XYZ	xyz(16.2437, 14.3913, 48.9258)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4666BB #BB9B46

analogous

#46A0BB #4666BB #6146BB

triadic

#4666BB #BB4666 #66BB46

tetradic

#4666BB #BB46A0 #BB9B46 #46BB61

square

#4666BB #BB46A0 #BB9B46 #46BB61

split-complementary

#4666BB #BB6146 #A0BB46

monochromatic

#243562 #354D8F #4666BB #738BCB #A0B0DC

Accessibility & contrast

On white

5.41

#4666BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#4666BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4666BB

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4666BB	#FFFFFF	#000000	##FFFFFF
##4666BB	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D70BE

Deuteranopia (green-blind)

#2A65B9

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #4666bb;
/* rgb */ color: rgb(70, 102, 187);
/* oklch */ color: oklch(52.9% 0.138 266.3);

Tailwind

colors: {
  custom: {
    50: '#8491d0',
    500: '#4666bb',
    950: '#000000',
  },
}

SCSS

$custom: #4666bb;
$custom-light: #8491d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4666bb",
  "rgb": {
    "r": 70,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 223.59,
    "s": 46.245,
    "l": 50.392
  },
  "oklch": {
    "l": 0.52946,
    "c": 0.13843,
    "h": 266.3
  },
  "luminance": 0.14393
}

Semantic roles & 50–950 ramp

primary

#4666BB

secondary

#C8BA94

accent

#B252D6

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4666BB

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

Preview Lab → · Contrast checker → · Palette generator →