#3C66D3#3C66D3

#3C66D3 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.1% C 0.175 H 265.1°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#3C66D3
RGB	rgb(60, 102, 211)
HSL	hsl(223, 63%, 53%)
HSV	hsv(223, 72%, 83%)
CMYK	cmyk(71.6%, 51.7%, 0%, 17.3%)
CIE-LAB	lab(45.86, 22.45, -60.51)
CIE-LCH	lch(45.86, 64.54, 290.35°)
OKLab	oklab(54.13% -0.0148 -0.174)
OKLCH	oklch(54.13% 0.175 265.1)
XYZ	xyz(18.3686, 15.1646, 63.5744)
Luminance	0.1517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66D3 #D3A93C

analogous

#3CB2D3 #3C66D3 #5D3CD3

triadic

#3C66D3 #D33C66 #66D33C

tetradic

#3C66D3 #D33CB2 #D3A93C #3CD35D

square

#3C66D3 #D33CB2 #D3A93C #3CD35D

split-complementary

#3C66D3 #D35D3C #B2D33C

monochromatic

#1B3579 #274BAB #3C66D3 #6E8DDE #A0B4EA

Accessibility & contrast

On white

5.21

#3C66D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#3C66D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66D3

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66D3	#FFFFFF	#000000	##FFFFFF
##3C66D3	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E74D7

Deuteranopia (green-blind)

#0066D1

Tritanopia (blue-blind)

#008093

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3c66d3;
/* rgb */ color: rgb(60, 102, 211);
/* oklch */ color: oklch(54.1% 0.175 265.1);

Tailwind

colors: {
  custom: {
    50: '#8491e1',
    500: '#3c66d3',
    950: '#000000',
  },
}

SCSS

$custom: #3c66d3;
$custom-light: #8491e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66d3",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 211
  },
  "hsl": {
    "h": 223.311,
    "s": 63.18,
    "l": 53.137
  },
  "oklch": {
    "l": 0.54127,
    "c": 0.17464,
    "h": 265.1
  },
  "luminance": 0.15167
}

Semantic roles & 50–950 ramp

primary

#3C66D3

secondary

#D6C495

accent

#B842E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3C66D3

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

Preview Lab → · Contrast checker → · Palette generator →