#3166CF#3166CF

#3166CF is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.4% C 0.172 H 262.1°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#3166CF
RGB	rgb(49, 102, 207)
HSL	hsl(220, 62%, 50%)
HSV	hsv(220, 76%, 81%)
CMYK	cmyk(76.3%, 50.7%, 0%, 18.8%)
CIE-LAB	lab(45.16, 19.60, -59.37)
CIE-LCH	lch(45.16, 62.52, 288.27°)
OKLab	oklab(53.39% -0.0236 -0.1708)
OKLCH	oklch(53.39% 0.172 262.1)
XYZ	xyz(17.2764, 14.6587, 60.9383)
Luminance	0.1466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166CF #CF9A31

analogous

#31B5CF #3166CF #4B31CF

triadic

#3166CF #CF3166 #66CF31

tetradic

#3166CF #CF31B5 #CF9A31 #31CF4B

square

#3166CF #CF31B5 #CF9A31 #31CF4B

split-complementary

#3166CF #CF4B31 #B5CF31

monochromatic

#19356C #254D9E #3166CF #638BDB #94B0E6

Accessibility & contrast

On white

5.34

#3166CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#3166CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166CF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166CF	#FFFFFF	#000000	##FFFFFF
##3166CF	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2373D3

Deuteranopia (green-blind)

#0064CD

Tritanopia (blue-blind)

#007F91

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3166cf;
/* rgb */ color: rgb(49, 102, 207);
/* oklch */ color: oklch(53.4% 0.172 262.1);

Tailwind

colors: {
  custom: {
    50: '#8091de',
    500: '#3166cf',
    950: '#000000',
  },
}

SCSS

$custom: #3166cf;
$custom-light: #8091de;
$custom-dark: #000000;

JSON

{
  "hex": "#3166cf",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 207
  },
  "hsl": {
    "h": 219.873,
    "s": 62.205,
    "l": 50.196
  },
  "oklch": {
    "l": 0.53393,
    "c": 0.17245,
    "h": 262.1
  },
  "luminance": 0.14661
}

Semantic roles & 50–950 ramp

primary

#3166CF

secondary

#D1BA8B

accent

#AF43E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3166CF

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

Preview Lab → · Contrast checker → · Palette generator →