#3166B6#3166B6

#3166B6 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.6% C 0.139 H 258.6°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#3166B6
RGB	rgb(49, 102, 182)
HSL	hsl(216, 58%, 45%)
HSV	hsv(216, 73%, 71%)
CMYK	cmyk(73.1%, 44%, 0%, 28.6%)
CIE-LAB	lab(43.55, 10.21, -47.50)
CIE-LCH	lch(43.55, 48.58, 282.14°)
OKLab	oklab(51.64% -0.0274 -0.1359)
OKLCH	oklch(51.64% 0.139 258.6)
XYZ	xyz(14.4584, 13.5315, 46.0968)
Luminance	0.1353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166B6 #B68131

analogous

#31A9B6 #3166B6 #3E31B6

triadic

#3166B6 #B63166 #66B631

tetradic

#3166B6 #B631A9 #B68131 #31B63E

square

#3166B6 #B631A9 #B68131 #31B63E

split-complementary

#3166B6 #B63E31 #A9B631

monochromatic

#173056 #244B86 #3166B6 #5385D1 #84A8DE

Accessibility & contrast

On white

5.67

#3166B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3166B6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166B6

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166B6	#FFFFFF	#000000	##FFFFFF
##3166B6	1.00	5.67	3.71	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E6DB9

Deuteranopia (green-blind)

#2661B4

Tritanopia (blue-blind)

#007985

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3166b6;
/* rgb */ color: rgb(49, 102, 182);
/* oklch */ color: oklch(51.6% 0.139 258.6);

Tailwind

colors: {
  custom: {
    50: '#7a91cc',
    500: '#3166b6',
    950: '#000000',
  },
}

SCSS

$custom: #3166b6;
$custom-light: #7a91cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3166b6",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 182
  },
  "hsl": {
    "h": 216.09,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51641,
    "c": 0.13865,
    "h": 258.6
  },
  "luminance": 0.13533
}

Semantic roles & 50–950 ramp

primary

#3166B6

secondary

#C7A97C

accent

#A447E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3166B6

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

Preview Lab → · Contrast checker → · Palette generator →