#3B66CA#3B66CA

#3B66CA is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.4% C 0.163 H 264.1°. Best body text is #FFFFFF at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#3B66CA
RGB	rgb(59, 102, 202)
HSL	hsl(222, 57%, 51%)
HSV	hsv(222, 71%, 79%)
CMYK	cmyk(70.8%, 49.5%, 0%, 20.8%)
CIE-LAB	lab(45.21, 19.03, -56.39)
CIE-LCH	lch(45.21, 59.52, 288.64°)
OKLab	oklab(53.43% -0.0166 -0.1619)
OKLCH	oklch(53.43% 0.163 264.1)
XYZ	xyz(17.2119, 14.6950, 57.7950)
Luminance	0.1470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B66CA #CA9F3B

analogous

#3BADCA #3B66CA #573BCA

triadic

#3B66CA #CA3B66 #66CA3B

tetradic

#3B66CA #CA3BAD #CA9F3B #3BCA57

square

#3B66CA #CA3BAD #CA9F3B #3BCA57

split-complementary

#3B66CA #CA573B #ADCA3B

monochromatic

#1E356D #2B4D9D #3B66CA #6B8CD7 #9BB1E4

Accessibility & contrast

On white

5.33

#3B66CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#3B66CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B66CA

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B66CA	#FFFFFF	#000000	##FFFFFF
##3B66CA	1.00	5.33	3.94	5.33
#FFFFFF	5.33	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C72CE

Deuteranopia (green-blind)

#0065C8

Tritanopia (blue-blind)

#007E8E

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3b66ca;
/* rgb */ color: rgb(59, 102, 202);
/* oklch */ color: oklch(53.4% 0.163 264.1);

Tailwind

colors: {
  custom: {
    50: '#8291db',
    500: '#3b66ca',
    950: '#000000',
  },
}

SCSS

$custom: #3b66ca;
$custom-light: #8291db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b66ca",
  "rgb": {
    "r": 59,
    "g": 102,
    "b": 202
  },
  "hsl": {
    "h": 221.958,
    "s": 57.43,
    "l": 51.176
  },
  "oklch": {
    "l": 0.53432,
    "c": 0.16277,
    "h": 264.1
  },
  "luminance": 0.14697
}

Semantic roles & 50–950 ramp

primary

#3B66CA

secondary

#D0BD91

accent

#B347E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3B66CA

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

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