#4F63BB#4F63BB

#4F63BB is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.8% C 0.139 H 271.3°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#4F63BB
RGB	rgb(79, 99, 187)
HSL	hsl(229, 44%, 52%)
HSV	hsv(229, 58%, 73%)
CMYK	cmyk(57.8%, 47.1%, 0%, 26.7%)
CIE-LAB	lab(44.48, 19.10, -48.85)
CIE-LCH	lch(44.48, 52.45, 291.35°)
OKLab	oklab(52.85% 0.0031 -0.1393)
OKLCH	oklch(52.85% 0.139 271.3)
XYZ	xyz(16.6530, 14.1725, 48.8621)
Luminance	0.1417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F63BB #BBA74F

analogous

#4F99BB #4F63BB #714FBB

triadic

#4F63BB #BB4F63 #63BB4F

tetradic

#4F63BB #BB4F99 #BBA74F #4FBB71

square

#4F63BB #BB4F99 #BBA74F #4FBB71

split-complementary

#4F63BB #BB714F #99BB4F

monochromatic

#283468 #394A94 #4F63BB #7B8ACC #A7B1DD

Accessibility & contrast

On white

5.48

#4F63BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#4F63BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F63BB

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F63BB	#FFFFFF	#000000	##FFFFFF
##4F63BB	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396EBE

Deuteranopia (green-blind)

#2A65B9

Tritanopia (blue-blind)

#007786

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #4f63bb;
/* rgb */ color: rgb(79, 99, 187);
/* oklch */ color: oklch(52.8% 0.139 271.3);

Tailwind

colors: {
  custom: {
    50: '#898fd0',
    500: '#4f63bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f63bb;
$custom-light: #898fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f63bb",
  "rgb": {
    "r": 79,
    "g": 99,
    "b": 187
  },
  "hsl": {
    "h": 228.889,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.52845,
    "c": 0.13939,
    "h": 271.3
  },
  "luminance": 0.14174
}

Semantic roles & 50–950 ramp

primary

#4F63BB

secondary

#CAC29B

accent

#BC54D4

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4F63BB

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

Preview Lab → · Contrast checker → · Palette generator →