#3C66D9#3C66D9

#3C66D9 is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.6% C 0.183 H 265.5°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#3C66D9
RGB	rgb(60, 102, 217)
HSL	hsl(224, 67%, 54%)
HSV	hsv(224, 72%, 85%)
CMYK	cmyk(72.4%, 53%, 0%, 14.9%)
CIE-LAB	lab(46.27, 24.63, -63.26)
CIE-LCH	lch(46.27, 67.88, 291.27°)
OKLab	oklab(54.57% -0.0142 -0.1821)
OKLCH	oklch(54.57% 0.183 265.5)
XYZ	xyz(19.1348, 15.4711, 67.6100)
Luminance	0.1547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66D9 #D9AF3C

analogous

#3CB5D9 #3C66D9 #613CD9

triadic

#3C66D9 #D93C66 #66D93C

tetradic

#3C66D9 #D93CB5 #D9AF3C #3CD961

square

#3C66D9 #D93CB5 #D9AF3C #3CD961

split-complementary

#3C66D9 #D9613C #B5D93C

monochromatic

#193581 #234AB5 #3C66D9 #6F8EE3 #A2B6ED

Accessibility & contrast

On white

5.13

#3C66D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#3C66D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66D9

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66D9	#FFFFFF	#000000	##FFFFFF
##3C66D9	1.00	5.13	4.09	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F75DD

Deuteranopia (green-blind)

#0067D7

Tritanopia (blue-blind)

#008296

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3c66d9;
/* rgb */ color: rgb(60, 102, 217);
/* oklch */ color: oklch(54.6% 0.183 265.5);

Tailwind

colors: {
  custom: {
    50: '#8691e5',
    500: '#3c66d9',
    950: '#000000',
  },
}

SCSS

$custom: #3c66d9;
$custom-light: #8691e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66d9",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 217
  },
  "hsl": {
    "h": 223.949,
    "s": 67.382,
    "l": 54.314
  },
  "oklch": {
    "l": 0.54572,
    "c": 0.18267,
    "h": 265.5
  },
  "luminance": 0.15473
}

Semantic roles & 50–950 ramp

primary

#3C66D9

secondary

#DAC897

accent

#BC3EEA

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0D0C16

muted

#7D7D84

Preview Lab

Preview with #3C66D9

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

Preview Lab → · Contrast checker → · Palette generator →