#4066CB#4066CB

#4066CB is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.7% C 0.163 H 265.7°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#4066CB
RGB	rgb(64, 102, 203)
HSL	hsl(224, 57%, 52%)
HSV	hsv(224, 68%, 80%)
CMYK	cmyk(68.5%, 49.8%, 0%, 20.4%)
CIE-LAB	lab(45.50, 20.12, -56.49)
CIE-LCH	lch(45.50, 59.97, 289.61°)
OKLab	oklab(53.73% -0.0123 -0.1621)
OKLCH	oklch(53.73% 0.163 265.7)
XYZ	xyz(17.6415, 14.9028, 58.4351)
Luminance	0.1490 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4066CB #CBA540

analogous

#40ACCB #4066CB #5F40CB

triadic

#4066CB #CB4066 #66CB40

tetradic

#4066CB #CB40AC #CBA540 #40CB5F

square

#4066CB #CB40AC #CBA540 #40CB5F

split-complementary

#4066CB #CB5F40 #ACCB40

monochromatic

#1F3672 #2C4CA2 #4066CB #708DD8 #A0B3E5

Accessibility & contrast

On white

5.28

#4066CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#4066CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4066CB

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4066CB	#FFFFFF	#000000	##FFFFFF
##4066CB	1.00	5.28	3.98	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C72CF

Deuteranopia (green-blind)

#0066C9

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #4066cb;
/* rgb */ color: rgb(64, 102, 203);
/* oklch */ color: oklch(53.7% 0.163 265.7);

Tailwind

colors: {
  custom: {
    50: '#8491db',
    500: '#4066cb',
    950: '#000000',
  },
}

SCSS

$custom: #4066cb;
$custom-light: #8491db;
$custom-dark: #000000;

JSON

{
  "hex": "#4066cb",
  "rgb": {
    "r": 64,
    "g": 102,
    "b": 203
  },
  "hsl": {
    "h": 223.597,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.53733,
    "c": 0.16258,
    "h": 265.7
  },
  "luminance": 0.14905
}

Semantic roles & 50–950 ramp

primary

#4066CB

secondary

#D2C195

accent

#B747E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #4066CB

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

Preview Lab → · Contrast checker → · Palette generator →