#3C66CD#3C66CD

#3C66CD is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.7% C 0.167 H 264.7°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#3C66CD
RGB	rgb(60, 102, 205)
HSL	hsl(223, 59%, 52%)
HSV	hsv(223, 71%, 80%)
CMYK	cmyk(70.7%, 50.2%, 0%, 19.6%)
CIE-LAB	lab(45.45, 20.26, -57.73)
CIE-LCH	lch(45.45, 61.18, 289.34°)
OKLab	oklab(53.69% -0.0154 -0.1658)
OKLCH	oklch(53.69% 0.167 264.7)
XYZ	xyz(17.6304, 14.8693, 59.6867)
Luminance	0.1487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66CD #CDA33C

analogous

#3CAECD #3C66CD #5B3CCD

triadic

#3C66CD #CD3C66 #66CD3C

tetradic

#3C66CD #CD3CAE #CDA33C #3CCD5B

square

#3C66CD #CD3CAE #CDA33C #3CCD5B

split-complementary

#3C66CD #CD5B3C #AECD3C

monochromatic

#1D3671 #2A4DA2 #3C66CD #6D8CD9 #9DB2E6

Accessibility & contrast

On white

5.28

#3C66CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#3C66CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66CD

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66CD	#FFFFFF	#000000	##FFFFFF
##3C66CD	1.00	5.28	3.97	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2873D1

Deuteranopia (green-blind)

#0065CB

Tritanopia (blue-blind)

#007E90

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3c66cd;
/* rgb */ color: rgb(60, 102, 205);
/* oklch */ color: oklch(53.7% 0.167 264.7);

Tailwind

colors: {
  custom: {
    50: '#8391dd',
    500: '#3c66cd',
    950: '#000000',
  },
}

SCSS

$custom: #3c66cd;
$custom-light: #8391dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66cd",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 205
  },
  "hsl": {
    "h": 222.621,
    "s": 59.184,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53691,
    "c": 0.16654,
    "h": 264.7
  },
  "luminance": 0.14871
}

Semantic roles & 50–950 ramp

primary

#3C66CD

secondary

#D2C093

accent

#B545E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3C66CD

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

Preview Lab → · Contrast checker → · Palette generator →