#4F63CB#4F63CB

#4F63CB is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.9% C 0.162 H 271.7°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#4F63CB
RGB	rgb(79, 99, 203)
HSL	hsl(230, 54%, 55%)
HSV	hsv(230, 61%, 80%)
CMYK	cmyk(61.1%, 51.2%, 0%, 20.4%)
CIE-LAB	lab(45.49, 24.52, -56.47)
CIE-LCH	lch(45.49, 61.56, 293.47°)
OKLab	oklab(53.94% 0.0049 -0.1618)
OKLCH	oklch(53.94% 0.162 271.7)
XYZ	xyz(18.4622, 14.8962, 58.3907)
Luminance	0.1490 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F63CB #CBB74F

analogous

#4FA1CB #4F63CB #794FCB

triadic

#4F63CB #CB4F63 #63CB4F

tetradic

#4F63CB #CB4FA1 #CBB74F #4FCB79

square

#4F63CB #CB4FA1 #CBB74F #4FCB79

split-complementary

#4F63CB #CB794F #A1CB4F

monochromatic

#24327B #3246AA #4F63CB #7E8DD9 #ADB7E7

Accessibility & contrast

On white

5.28

#4F63CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#4F63CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F63CB

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F63CB	#FFFFFF	#000000	##FFFFFF
##4F63CB	1.00	5.28	3.98	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2871CF

Deuteranopia (green-blind)

#0066C9

Tritanopia (blue-blind)

#007B8D

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #4f63cb;
/* rgb */ color: rgb(79, 99, 203);
/* oklch */ color: oklch(53.9% 0.162 271.7);

Tailwind

colors: {
  custom: {
    50: '#8c8fdb',
    500: '#4f63cb',
    950: '#000000',
  },
}

SCSS

$custom: #4f63cb;
$custom-light: #8c8fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#4f63cb",
  "rgb": {
    "r": 79,
    "g": 99,
    "b": 203
  },
  "hsl": {
    "h": 230.323,
    "s": 54.386,
    "l": 55.294
  },
  "oklch": {
    "l": 0.53938,
    "c": 0.16184,
    "h": 271.7
  },
  "luminance": 0.14898
}

Semantic roles & 50–950 ramp

primary

#4F63CB

secondary

#D5CCA1

accent

#C64ADE

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #4F63CB

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

Preview Lab → · Contrast checker → · Palette generator →