#3166C3#3166C3

#3166C3 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.156 H 260.7°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3166C3
RGB	rgb(49, 102, 195)
HSL	hsl(218, 60%, 48%)
HSV	hsv(218, 75%, 76%)
CMYK	cmyk(74.9%, 47.7%, 0%, 23.5%)
CIE-LAB	lab(44.37, 15.09, -53.74)
CIE-LCH	lch(44.37, 55.82, 285.69°)
OKLab	oklab(52.53% -0.0252 -0.1543)
OKLCH	oklch(52.53% 0.156 260.7)
XYZ	xyz(15.8648, 14.0941, 53.5035)
Luminance	0.1410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166C3 #C38E31

analogous

#31AFC3 #3166C3 #4531C3

triadic

#3166C3 #C33166 #66C331

tetradic

#3166C3 #C331AF #C38E31 #31C345

square

#3166C3 #C331AF #C38E31 #31C345

split-complementary

#3166C3 #C34531 #AFC331

monochromatic

#183361 #254C92 #3166C3 #5B88D6 #8CABE2

Accessibility & contrast

On white

5.50

#3166C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3166C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166C3

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166C3	#FFFFFF	#000000	##FFFFFF
##3166C3	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3370C6

Deuteranopia (green-blind)

#0463C1

Tritanopia (blue-blind)

#007C8B

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3166c3;
/* rgb */ color: rgb(49, 102, 195);
/* oklch */ color: oklch(52.5% 0.156 260.7);

Tailwind

colors: {
  custom: {
    50: '#7d91d6',
    500: '#3166c3',
    950: '#000000',
  },
}

SCSS

$custom: #3166c3;
$custom-light: #7d91d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3166c3",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 195
  },
  "hsl": {
    "h": 218.219,
    "s": 59.836,
    "l": 47.843
  },
  "oklch": {
    "l": 0.5253,
    "c": 0.15632,
    "h": 260.7
  },
  "luminance": 0.14096
}

Semantic roles & 50–950 ramp

primary

#3166C3

secondary

#CCB283

accent

#AA45E3

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3166C3

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

Preview Lab → · Contrast checker → · Palette generator →