#4B66CC#4B66CC

#4B66CC is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.4% C 0.161 H 269.3°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#4B66CC
RGB	rgb(75, 102, 204)
HSL	hsl(227, 56%, 55%)
HSV	hsv(227, 63%, 80%)
CMYK	cmyk(63.2%, 50%, 0%, 20%)
CIE-LAB	lab(46.12, 22.27, -56.04)
CIE-LCH	lch(46.12, 60.31, 291.67°)
OKLab	oklab(54.37% -0.0019 -0.1606)
OKLCH	oklch(54.37% 0.161 269.3)
XYZ	xyz(18.5484, 15.3566, 59.1017)
Luminance	0.1536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B66CC #CCB14B

analogous

#4BA6CC #4B66CC #714BCC

triadic

#4B66CC #CC4B66 #66CC4B

tetradic

#4B66CC #CC4BA6 #CCB14B #4BCC71

square

#4B66CC #CC4BA6 #CCB14B #4BCC71

split-complementary

#4B66CC #CC714B #A6CC4B

monochromatic

#23357A #304AAA #4B66CC #7B8FDA #AAB7E7

Accessibility & contrast

On white

5.16

#4B66CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#4B66CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B66CC

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B66CC	#FFFFFF	#000000	##FFFFFF
##4B66CC	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E73D0

Deuteranopia (green-blind)

#0868CA

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #4b66cc;
/* rgb */ color: rgb(75, 102, 204);
/* oklch */ color: oklch(54.4% 0.161 269.3);

Tailwind

colors: {
  custom: {
    50: '#8a91dc',
    500: '#4b66cc',
    950: '#000000',
  },
}

SCSS

$custom: #4b66cc;
$custom-light: #8a91dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4b66cc",
  "rgb": {
    "r": 75,
    "g": 102,
    "b": 204
  },
  "hsl": {
    "h": 227.442,
    "s": 55.844,
    "l": 54.706
  },
  "oklch": {
    "l": 0.54373,
    "c": 0.16059,
    "h": 269.3
  },
  "luminance": 0.15358
}

Semantic roles & 50–950 ramp

primary

#4B66CC

secondary

#D5C99E

accent

#C049DF

background

#F9F8FD

surface

#F1F0FB

border

#CBCBD4

text

#0D0C15

muted

#7E7D83

Preview Lab

Preview with #4B66CC

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

Preview Lab → · Contrast checker → · Palette generator →