#3C66D4#3C66D4

#3C66D4 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.2% C 0.176 H 265.2°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#3C66D4
RGB	rgb(60, 102, 212)
HSL	hsl(223, 64%, 53%)
HSV	hsv(223, 72%, 83%)
CMYK	cmyk(71.7%, 51.9%, 0%, 16.9%)
CIE-LAB	lab(45.93, 22.81, -60.97)
CIE-LCH	lch(45.93, 65.10, 290.51°)
OKLab	oklab(54.2% -0.0147 -0.1754)
OKLCH	oklch(54.2% 0.176 265.2)
XYZ	xyz(18.4943, 15.2149, 64.2367)
Luminance	0.1522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66D4 #D4AA3C

analogous

#3CB2D4 #3C66D4 #5E3CD4

triadic

#3C66D4 #D43C66 #66D43C

tetradic

#3C66D4 #D43CB2 #D4AA3C #3CD45E

square

#3C66D4 #D43CB2 #D4AA3C #3CD45E

split-complementary

#3C66D4 #D45E3C #B2D43C

monochromatic

#1B357B #264BAD #3C66D4 #6E8DDF #A0B5EA

Accessibility & contrast

On white

5.19

#3C66D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#3C66D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66D4

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66D4	#FFFFFF	#000000	##FFFFFF
##3C66D4	1.00	5.19	4.04	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C74D8

Deuteranopia (green-blind)

#0066D2

Tritanopia (blue-blind)

#008093

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3c66d4;
/* rgb */ color: rgb(60, 102, 212);
/* oklch */ color: oklch(54.2% 0.176 265.2);

Tailwind

colors: {
  custom: {
    50: '#8591e2',
    500: '#3c66d4',
    950: '#000000',
  },
}

SCSS

$custom: #3c66d4;
$custom-light: #8591e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66d4",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 212
  },
  "hsl": {
    "h": 223.421,
    "s": 63.866,
    "l": 53.333
  },
  "oklch": {
    "l": 0.54201,
    "c": 0.17598,
    "h": 265.2
  },
  "luminance": 0.15217
}

Semantic roles & 50–950 ramp

primary

#3C66D4

secondary

#D7C595

accent

#B941E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3C66D4

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

Preview Lab → · Contrast checker → · Palette generator →