#4063B8#4063B8

#4063B8 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.8% C 0.140 H 265.1°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#4063B8
RGB	rgb(64, 99, 184)
HSL	hsl(223, 48%, 49%)
HSV	hsv(223, 65%, 72%)
CMYK	cmyk(65.2%, 46.2%, 0%, 27.8%)
CIE-LAB	lab(43.47, 15.22, -48.77)
CIE-LCH	lch(43.47, 51.09, 287.33°)
OKLab	oklab(51.79% -0.012 -0.1394)
OKLCH	oklch(51.79% 0.14 265.1)
XYZ	xyz(15.2249, 13.4729, 47.1363)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4063B8 #B89540

analogous

#409FB8 #4063B8 #5940B8

triadic

#4063B8 #B84063 #63B840

tetradic

#4063B8 #B8409F #B89540 #40B859

square

#4063B8 #B8409F #B89540 #40B859

split-complementary

#4063B8 #B85940 #9FB840

monochromatic

#20325D #304B8B #4063B8 #6A86CB #97ABDB

Accessibility & contrast

On white

5.68

#4063B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#4063B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4063B8

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4063B8	#FFFFFF	#000000	##FFFFFF
##4063B8	1.00	5.68	3.69	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396DBB

Deuteranopia (green-blind)

#2362B6

Tritanopia (blue-blind)

#007784

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4063b8;
/* rgb */ color: rgb(64, 99, 184);
/* oklch */ color: oklch(51.8% 0.140 265.1);

Tailwind

colors: {
  custom: {
    50: '#818ece',
    500: '#4063b8',
    950: '#000000',
  },
}

SCSS

$custom: #4063b8;
$custom-light: #818ece;
$custom-dark: #000000;

JSON

{
  "hex": "#4063b8",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 184
  },
  "hsl": {
    "h": 222.5,
    "s": 48.387,
    "l": 48.627
  },
  "oklch": {
    "l": 0.51792,
    "c": 0.13996,
    "h": 265.1
  },
  "luminance": 0.13474
}

Semantic roles & 50–950 ramp

primary

#4063B8

secondary

#C7B68D

accent

#B050D8

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #4063B8

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

Preview Lab → · Contrast checker → · Palette generator →