#3C66D2#3C66D2

#3C66D2 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.1% C 0.173 H 265.1°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#3C66D2
RGB	rgb(60, 102, 210)
HSL	hsl(223, 63%, 53%)
HSV	hsv(223, 71%, 82%)
CMYK	cmyk(71.4%, 51.4%, 0%, 17.6%)
CIE-LAB	lab(45.79, 22.08, -60.05)
CIE-LCH	lch(45.79, 63.98, 290.19°)
OKLab	oklab(54.05% -0.0149 -0.1726)
OKLCH	oklch(54.05% 0.173 265.1)
XYZ	xyz(18.2436, 15.1146, 62.9162)
Luminance	0.1512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66D2 #D2A83C

analogous

#3CB1D2 #3C66D2 #5D3CD2

triadic

#3C66D2 #D23C66 #66D23C

tetradic

#3C66D2 #D23CB1 #D2A83C #3CD25D

square

#3C66D2 #D23CB1 #D2A83C #3CD25D

split-complementary

#3C66D2 #D25D3C #B1D23C

monochromatic

#1C3678 #274CAA #3C66D2 #6E8DDD #9FB4E9

Accessibility & contrast

On white

5.22

#3C66D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#3C66D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66D2

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66D2	#FFFFFF	#000000	##FFFFFF
##3C66D2	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2074D6

Deuteranopia (green-blind)

#0066D0

Tritanopia (blue-blind)

#008092

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3c66d2;
/* rgb */ color: rgb(60, 102, 210);
/* oklch */ color: oklch(54.1% 0.173 265.1);

Tailwind

colors: {
  custom: {
    50: '#8491e0',
    500: '#3c66d2',
    950: '#000000',
  },
}

SCSS

$custom: #3c66d2;
$custom-light: #8491e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66d2",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 210
  },
  "hsl": {
    "h": 223.2,
    "s": 62.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.54054,
    "c": 0.17329,
    "h": 265.1
  },
  "luminance": 0.15117
}

Semantic roles & 50–950 ramp

primary

#3C66D2

secondary

#D5C394

accent

#B842E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3C66D2

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

Preview Lab → · Contrast checker → · Palette generator →