#3166C1#3166C1

#3166C1 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.4% C 0.154 H 260.4°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#3166C1
RGB	rgb(49, 102, 193)
HSL	hsl(218, 60%, 47%)
HSV	hsv(218, 75%, 76%)
CMYK	cmyk(74.6%, 47.2%, 0%, 24.3%)
CIE-LAB	lab(44.24, 14.34, -52.79)
CIE-LCH	lch(44.24, 54.70, 285.20°)
OKLab	oklab(52.39% -0.0255 -0.1515)
OKLCH	oklch(52.39% 0.154 260.4)
XYZ	xyz(15.6402, 14.0042, 52.3205)
Luminance	0.1401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166C1 #C18C31

analogous

#31AEC1 #3166C1 #4431C1

triadic

#3166C1 #C13166 #66C131

tetradic

#3166C1 #C131AE #C18C31 #31C144

square

#3166C1 #C131AE #C18C31 #31C144

split-complementary

#3166C1 #C14431 #AEC131

monochromatic

#18325F #254C90 #3166C1 #5A87D5 #8BABE2

Accessibility & contrast

On white

5.52

#3166C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#3166C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166C1

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166C1	#FFFFFF	#000000	##FFFFFF
##3166C1	1.00	5.52	3.80	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3570C4

Deuteranopia (green-blind)

#0D62BF

Tritanopia (blue-blind)

#007C8A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3166c1;
/* rgb */ color: rgb(49, 102, 193);
/* oklch */ color: oklch(52.4% 0.154 260.4);

Tailwind

colors: {
  custom: {
    50: '#7d91d4',
    500: '#3166c1',
    950: '#000000',
  },
}

SCSS

$custom: #3166c1;
$custom-light: #7d91d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3166c1",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 193
  },
  "hsl": {
    "h": 217.917,
    "s": 59.504,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52391,
    "c": 0.15361,
    "h": 260.4
  },
  "luminance": 0.14006
}

Semantic roles & 50–950 ramp

primary

#3166C1

secondary

#CCB182

accent

#A945E3

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3166C1

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

Preview Lab → · Contrast checker → · Palette generator →