#3166D0#3166D0

#3166D0 is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.5% C 0.174 H 262.2°. Best body text is #FFFFFF at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#3166D0
RGB	rgb(49, 102, 208)
HSL	hsl(220, 63%, 50%)
HSV	hsv(220, 76%, 82%)
CMYK	cmyk(76.4%, 51%, 0%, 18.4%)
CIE-LAB	lab(45.23, 19.97, -59.83)
CIE-LCH	lch(45.23, 63.07, 288.46°)
OKLab	oklab(53.47% -0.0234 -0.1722)
OKLCH	oklch(53.47% 0.174 262.2)
XYZ	xyz(17.3991, 14.7078, 61.5842)
Luminance	0.1471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166D0 #D09B31

analogous

#31B5D0 #3166D0 #4B31D0

triadic

#3166D0 #D03166 #66D031

tetradic

#3166D0 #D031B5 #D09B31 #31D04B

square

#3166D0 #D031B5 #D09B31 #31D04B

split-complementary

#3166D0 #D04B31 #B5D031

monochromatic

#19356E #244D9F #3166D0 #638BDB #95B0E7

Accessibility & contrast

On white

5.33

#3166D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#3166D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166D0

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166D0	#FFFFFF	#000000	##FFFFFF
##3166D0	1.00	5.33	3.94	5.33
#FFFFFF	5.33	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2173D4

Deuteranopia (green-blind)

#0064CE

Tritanopia (blue-blind)

#008091

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3166d0;
/* rgb */ color: rgb(49, 102, 208);
/* oklch */ color: oklch(53.5% 0.174 262.2);

Tailwind

colors: {
  custom: {
    50: '#8091df',
    500: '#3166d0',
    950: '#000000',
  },
}

SCSS

$custom: #3166d0;
$custom-light: #8091df;
$custom-dark: #000000;

JSON

{
  "hex": "#3166d0",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 208
  },
  "hsl": {
    "h": 220,
    "s": 62.846,
    "l": 50.392
  },
  "oklch": {
    "l": 0.53467,
    "c": 0.17378,
    "h": 262.2
  },
  "luminance": 0.1471
}

Semantic roles & 50–950 ramp

primary

#3166D0

secondary

#D2BA8B

accent

#AF42E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3166D0

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

Preview Lab → · Contrast checker → · Palette generator →