#4F63DB#4F63DB

#4F63DB is a mid, vivid blue. Relative luminance 0.157; OKLCH L 55.1% C 0.184 H 271.9°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#4F63DB
RGB	rgb(79, 99, 219)
HSL	hsl(231, 66%, 58%)
HSV	hsv(231, 64%, 86%)
CMYK	cmyk(63.9%, 54.8%, 0%, 14.1%)
CIE-LAB	lab(46.58, 29.97, -63.86)
CIE-LCH	lch(46.58, 70.54, 295.14°)
OKLab	oklab(55.1% 0.006 -0.1835)
OKLCH	oklch(55.1% 0.184 271.9)
XYZ	xyz(20.4682, 15.6986, 68.9556)
Luminance	0.1570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F63DB #DBC74F

analogous

#4FA9DB #4F63DB #814FDB

triadic

#4F63DB #DB4F63 #63DB4F

tetradic

#4F63DB #DB4FA9 #DBC74F #4FDB81

square

#4F63DB #DB4FA9 #DBC74F #4FDB81

split-complementary

#4F63DB #DB814F #A9DB4F

monochromatic

#1E2E92 #283FC5 #4F63DB #8290E5 #B5BDF0

Accessibility & contrast

On white

5.07

#4F63DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#4F63DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F63DB

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F63DB	#FFFFFF	#000000	##FFFFFF
##4F63DB	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0075DF

Deuteranopia (green-blind)

#0068D9

Tritanopia (blue-blind)

#008095

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #4f63db;
/* rgb */ color: rgb(79, 99, 219);
/* oklch */ color: oklch(55.1% 0.184 271.9);

Tailwind

colors: {
  custom: {
    50: '#8e8fe7',
    500: '#4f63db',
    950: '#000000',
  },
}

SCSS

$custom: #4f63db;
$custom-light: #8e8fe7;
$custom-dark: #000000;

JSON

{
  "hex": "#4f63db",
  "rgb": {
    "r": 79,
    "g": 99,
    "b": 219
  },
  "hsl": {
    "h": 231.429,
    "s": 66.038,
    "l": 58.431
  },
  "oklch": {
    "l": 0.55099,
    "c": 0.18362,
    "h": 271.9
  },
  "luminance": 0.157
}

Semantic roles & 50–950 ramp

primary

#4F63DB

secondary

#DFD7A7

accent

#D13FE9

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #4F63DB

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

Preview Lab → · Contrast checker → · Palette generator →