#3C66AC#3C66AC

#3C66AC is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.5% C 0.121 H 260.1°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3C66AC
RGB	rgb(60, 102, 172)
HSL	hsl(218, 48%, 45%)
HSV	hsv(218, 65%, 67%)
CMYK	cmyk(65.1%, 40.7%, 0%, 32.5%)
CIE-LAB	lab(43.42, 8.31, -41.83)
CIE-LCH	lch(43.42, 42.65, 281.23°)
OKLab	oklab(51.47% -0.0209 -0.1191)
OKLCH	oklch(51.47% 0.121 260.1)
XYZ	xyz(14.0586, 13.4406, 40.8751)
Luminance	0.1344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C66AC #AC823C

analogous

#3C9EAC #3C66AC #4A3CAC

triadic

#3C66AC #AC3C66 #66AC3C

tetradic

#3C66AC #AC3C9E #AC823C #3CAC4A

square

#3C66AC #AC3C9E #AC823C #3CAC4A

split-complementary

#3C66AC #AC4A3C #9EAC3C

monochromatic

#1C3051 #2C4B7F #3C66AC #5E86C7 #8CA8D7

Accessibility & contrast

On white

5.69

#3C66AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3C66AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C66AC

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C66AC	#FFFFFF	#000000	##FFFFFF
##3C66AC	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#476CAF

Deuteranopia (green-blind)

#3662AB

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3c66ac;
/* rgb */ color: rgb(60, 102, 172);
/* oklch */ color: oklch(51.5% 0.121 260.1);

Tailwind

colors: {
  custom: {
    50: '#7d91c5',
    500: '#3c66ac',
    950: '#000000',
  },
}

SCSS

$custom: #3c66ac;
$custom-light: #7d91c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3c66ac",
  "rgb": {
    "r": 60,
    "g": 102,
    "b": 172
  },
  "hsl": {
    "h": 217.5,
    "s": 48.276,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51473,
    "c": 0.12091,
    "h": 260.1
  },
  "luminance": 0.13442
}

Semantic roles & 50–950 ramp

primary

#3C66AC

secondary

#C1AA82

accent

#A550D8

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3C66AC

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

Preview Lab → · Contrast checker → · Palette generator →