#4066B2#4066B2

#4066B2 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.0% C 0.128 H 262.7°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#4066B2
RGB	rgb(64, 102, 178)
HSL	hsl(220, 47%, 47%)
HSV	hsv(220, 64%, 70%)
CMYK	cmyk(64%, 42.7%, 0%, 30.2%)
CIE-LAB	lab(43.95, 11.17, -44.49)
CIE-LCH	lch(43.95, 45.87, 284.10°)
OKLab	oklab(52.05% -0.0161 -0.1268)
OKLCH	oklch(52.05% 0.128 262.7)
XYZ	xyz(14.8988, 13.8057, 43.9905)
Luminance	0.1381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4066B2 #B28C40

analogous

#409FB2 #4066B2 #5340B2

triadic

#4066B2 #B24066 #66B240

tetradic

#4066B2 #B2409F #B28C40 #40B253

square

#4066B2 #B2409F #B28C40 #40B253

split-complementary

#4066B2 #B25340 #9FB240

monochromatic

#203258 #304C85 #4066B2 #6787C8 #94ABD8

Accessibility & contrast

On white

5.58

#4066B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#4066B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4066B2

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4066B2	#FFFFFF	#000000	##FFFFFF
##4066B2	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436EB5

Deuteranopia (green-blind)

#3263B0

Tritanopia (blue-blind)

#007783

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #4066b2;
/* rgb */ color: rgb(64, 102, 178);
/* oklch */ color: oklch(52.0% 0.128 262.7);

Tailwind

colors: {
  custom: {
    50: '#8091c9',
    500: '#4066b2',
    950: '#000000',
  },
}

SCSS

$custom: #4066b2;
$custom-light: #8091c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4066b2",
  "rgb": {
    "r": 64,
    "g": 102,
    "b": 178
  },
  "hsl": {
    "h": 220,
    "s": 47.107,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52049,
    "c": 0.12784,
    "h": 262.7
  },
  "luminance": 0.13807
}

Semantic roles & 50–950 ramp

primary

#4066B2

secondary

#C4B18A

accent

#AA51D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4066B2

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

Preview Lab → · Contrast checker → · Palette generator →