#4F66BB#4F66BB

#4F66BB is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.5% C 0.136 H 269.9°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#4F66BB
RGB	rgb(79, 102, 187)
HSL	hsl(227, 44%, 52%)
HSV	hsv(227, 58%, 73%)
CMYK	cmyk(57.8%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(45.29, 17.20, -47.55)
CIE-LCH	lch(45.29, 50.56, 289.89°)
OKLab	oklab(53.47% -0.0001 -0.1355)
OKLCH	oklch(53.47% 0.136 269.9)
XYZ	xyz(16.9425, 14.7516, 48.9586)
Luminance	0.1475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4F66BB #BBA44F

analogous

#4F9CBB #4F66BB #6E4FBB

triadic

#4F66BB #BB4F66 #66BB4F

tetradic

#4F66BB #BB4F9C #BBA44F #4FBB6E

square

#4F66BB #BB4F9C #BBA44F #4FBB6E

split-complementary

#4F66BB #BB6E4F #9CBB4F

monochromatic

#283668 #394C94 #4F66BB #7B8CCC #A7B3DD

Accessibility & contrast

On white

5.32

#4F66BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#4F66BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4F66BB

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4F66BB	#FFFFFF	#000000	##FFFFFF
##4F66BB	1.00	5.32	3.95	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F70BE

Deuteranopia (green-blind)

#3067B9

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #4f66bb;
/* rgb */ color: rgb(79, 102, 187);
/* oklch */ color: oklch(53.5% 0.136 269.9);

Tailwind

colors: {
  custom: {
    50: '#8991d0',
    500: '#4f66bb',
    950: '#000000',
  },
}

SCSS

$custom: #4f66bb;
$custom-light: #8991d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4f66bb",
  "rgb": {
    "r": 79,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 227.222,
    "s": 44.262,
    "l": 52.157
  },
  "oklch": {
    "l": 0.53465,
    "c": 0.1355,
    "h": 269.9
  },
  "luminance": 0.14753
}

Semantic roles & 50–950 ramp

primary

#4F66BB

secondary

#CAC09B

accent

#B954D4

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #4F66BB

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

Preview Lab → · Contrast checker → · Palette generator →