#4B63BC#4B63BC

#4B63BC is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.7% C 0.142 H 269.7°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#4B63BC
RGB	rgb(75, 99, 188)
HSL	hsl(227, 46%, 52%)
HSV	hsv(227, 60%, 74%)
CMYK	cmyk(60.1%, 47.3%, 0%, 26.3%)
CIE-LAB	lab(44.30, 18.64, -49.72)
CIE-LCH	lch(44.30, 53.10, 290.55°)
OKLab	oklab(52.67% -0.0009 -0.142)
OKLCH	oklch(52.67% 0.142 269.7)
XYZ	xyz(16.4375, 14.0490, 49.4127)
Luminance	0.1405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B63BC #BCA44B

analogous

#4B9CBC #4B63BC #6C4BBC

triadic

#4B63BC #BC4B63 #63BC4B

tetradic

#4B63BC #BC4B9C #BCA44B #4BBC6C

square

#4B63BC #BC4B9C #BCA44B #4BBC6C

split-complementary

#4B63BC #BC6C4B #9CBC4B

monochromatic

#263466 #374A93 #4B63BC #788ACD #A4B0DD

Accessibility & contrast

On white

5.51

#4B63BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#4B63BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B63BC

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B63BC	#FFFFFF	#000000	##FFFFFF
##4B63BC	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386EBF

Deuteranopia (green-blind)

#2564BA

Tritanopia (blue-blind)

#007786

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #4b63bc;
/* rgb */ color: rgb(75, 99, 188);
/* oklch */ color: oklch(52.7% 0.142 269.7);

Tailwind

colors: {
  custom: {
    50: '#878fd1',
    500: '#4b63bc',
    950: '#000000',
  },
}

SCSS

$custom: #4b63bc;
$custom-light: #878fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#4b63bc",
  "rgb": {
    "r": 75,
    "g": 99,
    "b": 188
  },
  "hsl": {
    "h": 227.257,
    "s": 45.749,
    "l": 51.569
  },
  "oklch": {
    "l": 0.52668,
    "c": 0.14202,
    "h": 269.7
  },
  "luminance": 0.1405
}

Semantic roles & 50–950 ramp

primary

#4B63BC

secondary

#CAC099

accent

#BA52D5

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4B63BC

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

Preview Lab → · Contrast checker → · Palette generator →