#3C66D8#3C66D8

#3C66D8 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.5% C 0.181 H 265.5°. Best body text is #FFFFFF at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#3C66D8
RGB	rgb(60, 102, 216)
HSL	hsl(224, 67%, 54%)
HSV	hsv(224, 72%, 85%)
CMYK	cmyk(72.2%, 52.8%, 0%, 15.3%)
CIE-LAB	lab(46.20, 24.26, -62.80)
CIE-LCH	lch(46.20, 67.33, 291.12°)
OKLab	oklab(54.5% -0.0143 -0.1808)
OKLCH	oklch(54.5% 0.181 265.5)
XYZ	xyz(19.0052, 15.4192, 66.9270)
Luminance	0.1542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66D8 #D8AE3C

analogous

#3CB4D8 #3C66D8 #603CD8

triadic

#3C66D8 #D83C66 #66D83C

tetradic

#3C66D8 #D83CB4 #D8AE3C #3CD860

square

#3C66D8 #D83CB4 #D8AE3C #3CD860

split-complementary

#3C66D8 #D8603C #B4D83C

monochromatic

#1A3580 #244AB3 #3C66D8 #6F8EE2 #A2B6EC

Accessibility & contrast

On white

5.14

#3C66D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#3C66D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66D8

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66D8	#FFFFFF	#000000	##FFFFFF
##3C66D8	1.00	5.14	4.08	5.14
#FFFFFF	5.14	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1275DC

Deuteranopia (green-blind)

#0067D6

Tritanopia (blue-blind)

#008295

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3c66d8;
/* rgb */ color: rgb(60, 102, 216);
/* oklch */ color: oklch(54.5% 0.181 265.5);

Tailwind

colors: {
  custom: {
    50: '#8591e5',
    500: '#3c66d8',
    950: '#000000',
  },
}

SCSS

$custom: #3c66d8;
$custom-light: #8591e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66d8",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 216
  },
  "hsl": {
    "h": 223.846,
    "s": 66.667,
    "l": 54.118
  },
  "oklch": {
    "l": 0.54497,
    "c": 0.18133,
    "h": 265.5
  },
  "luminance": 0.15421
}

Semantic roles & 50–950 ramp

primary

#3C66D8

secondary

#D9C797

accent

#BB3EEA

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0D0C16

muted

#7D7D84

Preview Lab

Preview with #3C66D8

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

Preview Lab → · Contrast checker → · Palette generator →