#3166C8#3166C8

#3166C8 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.9% C 0.163 H 261.4°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3166C8
RGB	rgb(49, 102, 200)
HSL	hsl(219, 61%, 49%)
HSV	hsv(219, 76%, 78%)
CMYK	cmyk(75.5%, 49%, 0%, 21.6%)
CIE-LAB	lab(44.69, 16.97, -56.10)
CIE-LCH	lch(44.69, 58.61, 286.83°)
OKLab	oklab(52.89% -0.0245 -0.1612)
OKLCH	oklch(52.89% 0.163 261.4)
XYZ	xyz(16.4396, 14.3240, 56.5308)
Luminance	0.1433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166C8 #C89331

analogous

#31B2C8 #3166C8 #4731C8

triadic

#3166C8 #C83166 #66C831

tetradic

#3166C8 #C831B2 #C89331 #31C847

square

#3166C8 #C831B2 #C89331 #31C847

split-complementary

#3166C8 #C84731 #B2C831

monochromatic

#193466 #254D97 #3166C8 #5F89D8 #90ADE4

Accessibility & contrast

On white

5.43

#3166C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3166C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166C8

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166C8	#FFFFFF	#000000	##FFFFFF
##3166C8	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D71CC

Deuteranopia (green-blind)

#0063C6

Tritanopia (blue-blind)

#007D8D

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3166c8;
/* rgb */ color: rgb(49, 102, 200);
/* oklch */ color: oklch(52.9% 0.163 261.4);

Tailwind

colors: {
  custom: {
    50: '#7e91d9',
    500: '#3166c8',
    950: '#000000',
  },
}

SCSS

$custom: #3166c8;
$custom-light: #7e91d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3166c8",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 200
  },
  "hsl": {
    "h": 218.94,
    "s": 60.643,
    "l": 48.824
  },
  "oklch": {
    "l": 0.52885,
    "c": 0.16306,
    "h": 261.4
  },
  "luminance": 0.14326
}

Semantic roles & 50–950 ramp

primary

#3166C8

secondary

#CEB586

accent

#AC44E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0B0C15

muted

#7C7D83

Preview Lab

Preview with #3166C8

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

Preview Lab → · Contrast checker → · Palette generator →