#3B66EA#3B66EA

#3B66EA is a mid, highly saturated blue. Relative luminance 0.164; OKLCH L 55.8% C 0.205 H 266.1°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3B66EA
RGB	rgb(59, 102, 234)
HSL	hsl(225, 81%, 57%)
HSV	hsv(225, 75%, 92%)
CMYK	cmyk(74.8%, 56.4%, 0%, 8.2%)
CIE-LAB	lab(47.46, 30.66, -70.95)
CIE-LCH	lch(47.46, 77.30, 293.37°)
OKLab	oklab(55.84% -0.014 -0.2047)
OKLCH	oklch(55.84% 0.205 266.1)
XYZ	xyz(21.4011, 16.3707, 79.8579)
Luminance	0.1637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B66EA #EABF3B

analogous

#3BBEEA #3B66EA #673BEA

triadic

#3B66EA #EA3B66 #66EA3B

tetradic

#3B66EA #EA3BBE #EABF3B #3BEA67

square

#3B66EA #EA3BBE #EABF3B #3BEA67

split-complementary

#3B66EA #EA673B #BEEA3B

monochromatic

#11329A #1644D1 #3B66EA #7291F0 #AABCF6

Accessibility & contrast

On white

4.91

#3B66EA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3B66EA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B66EA

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B66EA	#FFFFFF	#000000	##FFFFFF
##3B66EA	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079EE

Deuteranopia (green-blind)

#0069E7

Tritanopia (blue-blind)

#00879E

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3b66ea;
/* rgb */ color: rgb(59, 102, 234);
/* oklch */ color: oklch(55.8% 0.205 266.1);

Tailwind

colors: {
  custom: {
    50: '#8991f2',
    500: '#3b66ea',
    950: '#000000',
  },
}

SCSS

$custom: #3b66ea;
$custom-light: #8991f2;
$custom-dark: #000000;

JSON

{
  "hex": "#3b66ea",
  "rgb": {
    "r": 59,
    "g": 102,
    "b": 234
  },
  "hsl": {
    "h": 225.257,
    "s": 80.645,
    "l": 57.451
  },
  "oklch": {
    "l": 0.55839,
    "c": 0.20523,
    "h": 266.1
  },
  "luminance": 0.16373
}

Semantic roles & 50–950 ramp

primary

#3B66EA

secondary

#E4D29D

accent

#C631F7

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0D0C17

muted

#7E7D85

Preview Lab

Preview with #3B66EA

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

Preview Lab → · Contrast checker → · Palette generator →