#3C66CC#3C66CC

#3C66CC is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.6% C 0.165 H 264.6°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#3C66CC
RGB	rgb(60, 102, 204)
HSL	hsl(223, 59%, 52%)
HSV	hsv(223, 71%, 80%)
CMYK	cmyk(70.6%, 50%, 0%, 20%)
CIE-LAB	lab(45.39, 19.90, -57.26)
CIE-LCH	lch(45.39, 60.62, 289.16°)
OKLab	oklab(53.62% -0.0155 -0.1645)
OKLCH	oklch(53.62% 0.165 264.6)
XYZ	xyz(17.5101, 14.8212, 59.0530)
Luminance	0.1482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66CC #CCA23C

analogous

#3CAECC #3C66CC #5A3CCC

triadic

#3C66CC #CC3C66 #66CC3C

tetradic

#3C66CC #CC3CAE #CCA23C #3CCC5A

square

#3C66CC #CC3CAE #CCA23C #3CCC5A

split-complementary

#3C66CC #CC5A3C #AECC3C

monochromatic

#1D3670 #2A4DA1 #3C66CC #6D8CD9 #9DB2E5

Accessibility & contrast

On white

5.30

#3C66CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#3C66CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66CC

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66CC	#FFFFFF	#000000	##FFFFFF
##3C66CC	1.00	5.30	3.96	5.30
#FFFFFF	5.30	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A72D0

Deuteranopia (green-blind)

#0065CA

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3c66cc;
/* rgb */ color: rgb(60, 102, 204);
/* oklch */ color: oklch(53.6% 0.165 264.6);

Tailwind

colors: {
  custom: {
    50: '#8391dc',
    500: '#3c66cc',
    950: '#000000',
  },
}

SCSS

$custom: #3c66cc;
$custom-light: #8391dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66cc",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 204
  },
  "hsl": {
    "h": 222.5,
    "s": 58.537,
    "l": 51.765
  },
  "oklch": {
    "l": 0.53619,
    "c": 0.16518,
    "h": 264.6
  },
  "luminance": 0.14823
}

Semantic roles & 50–950 ramp

primary

#3C66CC

secondary

#D1BF92

accent

#B446E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3C66CC

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

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