#3166C4#3166C4

#3166C4 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.6% C 0.158 H 260.9°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#3166C4
RGB	rgb(49, 102, 196)
HSL	hsl(218, 60%, 48%)
HSV	hsv(218, 75%, 77%)
CMYK	cmyk(75%, 48%, 0%, 23.1%)
CIE-LAB	lab(44.43, 15.47, -54.21)
CIE-LCH	lch(44.43, 56.38, 285.92°)
OKLab	oklab(52.6% -0.025 -0.1557)
OKLCH	oklch(52.6% 0.158 260.9)
XYZ	xyz(15.9782, 14.1394, 54.1009)
Luminance	0.1414 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166C4 #C48F31

analogous

#31B0C4 #3166C4 #4531C4

triadic

#3166C4 #C43166 #66C431

tetradic

#3166C4 #C431B0 #C48F31 #31C445

square

#3166C4 #C431B0 #C48F31 #31C445

split-complementary

#3166C4 #C44531 #B0C431

monochromatic

#193362 #254D93 #3166C4 #5C88D6 #8DACE2

Accessibility & contrast

On white

5.49

#3166C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3166C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166C4

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166C4	#FFFFFF	#000000	##FFFFFF
##3166C4	1.00	5.49	3.83	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3270C7

Deuteranopia (green-blind)

#0063C2

Tritanopia (blue-blind)

#007C8B

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3166c4;
/* rgb */ color: rgb(49, 102, 196);
/* oklch */ color: oklch(52.6% 0.158 260.9);

Tailwind

colors: {
  custom: {
    50: '#7d91d6',
    500: '#3166c4',
    950: '#000000',
  },
}

SCSS

$custom: #3166c4;
$custom-light: #7d91d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3166c4",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 196
  },
  "hsl": {
    "h": 218.367,
    "s": 60,
    "l": 48.039
  },
  "oklch": {
    "l": 0.52601,
    "c": 0.15767,
    "h": 260.9
  },
  "luminance": 0.14141
}

Semantic roles & 50–950 ramp

primary

#3166C4

secondary

#CDB384

accent

#AA45E3

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3166C4

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

Preview Lab → · Contrast checker → · Palette generator →