#4B66E1#4B66E1

#4B66E1 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.9% C 0.189 H 269.9°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#4B66E1
RGB	rgb(75, 102, 225)
HSL	hsl(229, 71%, 59%)
HSV	hsv(229, 67%, 88%)
CMYK	cmyk(66.7%, 54.7%, 0%, 11.8%)
CIE-LAB	lab(47.54, 29.55, -65.72)
CIE-LCH	lch(47.54, 72.05, 294.21°)
OKLab	oklab(55.89% -0.0003 -0.189)
OKLCH	oklch(55.89% 0.189 269.9)
XYZ	xyz(21.2390, 16.4328, 73.2721)
Luminance	0.1643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4B66E1 #E1C64B

analogous

#4BB1E1 #4B66E1 #7B4BE1

triadic

#4B66E1 #E14B66 #66E14B

tetradic

#4B66E1 #E14BB1 #E1C64B #4BE17B

square

#4B66E1 #E14BB1 #E1C64B #4BE17B

split-complementary

#4B66E1 #E17B4B #B1E14B

monochromatic

#193098 #2241CD #4B66E1 #7F93EA #B4BFF2

Accessibility & contrast

On white

4.90

#4B66E1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#4B66E1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4B66E1

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4B66E1	#FFFFFF	#000000	##FFFFFF
##4B66E1	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0078E5

Deuteranopia (green-blind)

#006ADF

Tritanopia (blue-blind)

#00849A

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4b66e1;
/* rgb */ color: rgb(75, 102, 225);
/* oklch */ color: oklch(55.9% 0.189 269.9);

Tailwind

colors: {
  custom: {
    50: '#8d91eb',
    500: '#4b66e1',
    950: '#000000',
  },
}

SCSS

$custom: #4b66e1;
$custom-light: #8d91eb;
$custom-dark: #000000;

JSON

{
  "hex": "#4b66e1",
  "rgb": {
    "r": 75,
    "g": 102,
    "b": 225
  },
  "hsl": {
    "h": 229.2,
    "s": 71.429,
    "l": 58.824
  },
  "oklch": {
    "l": 0.55894,
    "c": 0.18903,
    "h": 269.9
  },
  "luminance": 0.16435
}

Semantic roles & 50–950 ramp

primary

#4B66E1

secondary

#E1D7A6

accent

#CE3AEE

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #4B66E1

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

Preview Lab → · Contrast checker → · Palette generator →