#4063BC#4063BC

#4063BC is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.1% C 0.146 H 265.5°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#4063BC
RGB	rgb(64, 99, 188)
HSL	hsl(223, 49%, 49%)
HSV	hsv(223, 66%, 74%)
CMYK	cmyk(66%, 47.3%, 0%, 26.3%)
CIE-LAB	lab(43.72, 16.65, -50.70)
CIE-LCH	lch(43.72, 53.36, 288.18°)
OKLab	oklab(52.06% -0.0114 -0.1451)
OKLCH	oklch(52.06% 0.146 265.5)
XYZ	xyz(15.6501, 13.6430, 49.3758)
Luminance	0.1364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4063BC #BC9940

analogous

#40A1BC #4063BC #5B40BC

triadic

#4063BC #BC4063 #63BC40

tetradic

#4063BC #BC40A1 #BC9940 #40BC5B

square

#4063BC #BC40A1 #BC9940 #40BC5B

split-complementary

#4063BC #BC5B40 #A1BC40

monochromatic

#213361 #304B8E #4063BC #6C88CD #9AADDD

Accessibility & contrast

On white

5.63

#4063BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#4063BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4063BC

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4063BC	#FFFFFF	#000000	##FFFFFF
##4063BC	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356DBF

Deuteranopia (green-blind)

#1C62BA

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #4063bc;
/* rgb */ color: rgb(64, 99, 188);
/* oklch */ color: oklch(52.1% 0.146 265.5);

Tailwind

colors: {
  custom: {
    50: '#828ed1',
    500: '#4063bc',
    950: '#000000',
  },
}

SCSS

$custom: #4063bc;
$custom-light: #828ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#4063bc",
  "rgb": {
    "r": 64,
    "g": 99,
    "b": 188
  },
  "hsl": {
    "h": 223.065,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.52062,
    "c": 0.14556,
    "h": 265.5
  },
  "luminance": 0.13645
}

Semantic roles & 50–950 ramp

primary

#4063BC

secondary

#C9B88F

accent

#B24FD9

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4063BC

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

Preview Lab → · Contrast checker → · Palette generator →