#4066BB#4066BB

#4066BB is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.6% C 0.140 H 264.1°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#4066BB
RGB	rgb(64, 102, 187)
HSL	hsl(221, 49%, 49%)
HSV	hsv(221, 66%, 73%)
CMYK	cmyk(65.8%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(44.49, 14.38, -48.88)
CIE-LCH	lch(44.49, 50.95, 286.40°)
OKLab	oklab(52.63% -0.0145 -0.1397)
OKLCH	oklch(52.63% 0.14 264.1)
XYZ	xyz(15.8322, 14.1791, 48.9066)
Luminance	0.1418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4066BB #BB9540

analogous

#40A4BB #4066BB #5740BB

triadic

#4066BB #BB4066 #66BB40

tetradic

#4066BB #BB40A4 #BB9540 #40BB57

square

#4066BB #BB40A4 #BB9540 #40BB57

split-complementary

#4066BB #BB5740 #A4BB40

monochromatic

#213460 #304D8D #4066BB #6C8ACD #99AEDC

Accessibility & contrast

On white

5.47

#4066BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#4066BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4066BB

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4066BB	#FFFFFF	#000000	##FFFFFF
##4066BB	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6FBE

Deuteranopia (green-blind)

#2764B9

Tritanopia (blue-blind)

#007A87

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #4066bb;
/* rgb */ color: rgb(64, 102, 187);
/* oklch */ color: oklch(52.6% 0.140 264.1);

Tailwind

colors: {
  custom: {
    50: '#8191d0',
    500: '#4066bb',
    950: '#000000',
  },
}

SCSS

$custom: #4066bb;
$custom-light: #8191d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4066bb",
  "rgb": {
    "r": 64,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 221.463,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.52634,
    "c": 0.14047,
    "h": 264.1
  },
  "luminance": 0.14181
}

Semantic roles & 50–950 ramp

primary

#4066BB

secondary

#C8B68F

accent

#AE4FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #4066BB

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

Preview Lab → · Contrast checker → · Palette generator →