#4063BF#4063BF

#4063BF is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.3% C 0.150 H 265.8°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#4063BF
RGB	rgb(64, 99, 191)
HSL	hsl(223, 50%, 50%)
HSV	hsv(223, 66%, 75%)
CMYK	cmyk(66.5%, 48.2%, 0%, 25.1%)
CIE-LAB	lab(43.91, 17.73, -52.13)
CIE-LCH	lch(43.91, 55.06, 288.78°)
OKLab	oklab(52.27% -0.011 -0.1493)
OKLCH	oklch(52.27% 0.15 265.8)
XYZ	xyz(15.9769, 13.7737, 51.0967)
Luminance	0.1378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4063BF #BF9C40

analogous

#40A2BF #4063BF #5D40BF

triadic

#4063BF #BF4063 #63BF40

tetradic

#4063BF #BF40A2 #BF9C40 #40BF5D

square

#4063BF #BF40A2 #BF9C40 #40BF5D

split-complementary

#4063BF #BF5D40 #A2BF40

monochromatic

#213363 #314B91 #4063BF #6E88CE #9CAEDE

Accessibility & contrast

On white

5.59

#4063BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#4063BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4063BF

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4063BF	#FFFFFF	#000000	##FFFFFF
##4063BF	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#326EC2

Deuteranopia (green-blind)

#1562BD

Tritanopia (blue-blind)

#007888

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #4063bf;
/* rgb */ color: rgb(64, 99, 191);
/* oklch */ color: oklch(52.3% 0.150 265.8);

Tailwind

colors: {
  custom: {
    50: '#828ed3',
    500: '#4063bf',
    950: '#000000',
  },
}

SCSS

$custom: #4063bf;
$custom-light: #828ed3;
$custom-dark: #000000;

JSON

{
  "hex": "#4063bf",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 191
  },
  "hsl": {
    "h": 223.465,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.52269,
    "c": 0.14975,
    "h": 265.8
  },
  "luminance": 0.13775
}

Semantic roles & 50–950 ramp

primary

#4063BF

secondary

#CABA91

accent

#B34ED9

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #4063BF

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

Preview Lab → · Contrast checker → · Palette generator →