#3166BA#3166BA

#3166BA is a mid, vivid blue. Relative luminance 0.137; OKLCH L 51.9% C 0.144 H 259.3°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#3166BA
RGB	rgb(49, 102, 186)
HSL	hsl(217, 58%, 46%)
HSV	hsv(217, 74%, 73%)
CMYK	cmyk(73.7%, 45.2%, 0%, 27.1%)
CIE-LAB	lab(43.80, 11.71, -49.44)
CIE-LCH	lch(43.80, 50.80, 283.33°)
OKLab	oklab(51.91% -0.0267 -0.1416)
OKLCH	oklch(51.91% 0.144 259.3)
XYZ	xyz(14.8777, 13.6992, 48.3050)
Luminance	0.1370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166BA #BA8531

analogous

#31AABA #3166BA #4031BA

triadic

#3166BA #BA3166 #66BA31

tetradic

#3166BA #BA31AA #BA8531 #31BA40

square

#3166BA #BA31AA #BA8531 #31BA40

split-complementary

#3166BA #BA4031 #AABA31

monochromatic

#173159 #244B8A #3166BA #5686D2 #86A9DF

Accessibility & contrast

On white

5.61

#3166BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#3166BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166BA

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166BA	#FFFFFF	#000000	##FFFFFF
##3166BA	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6EBD

Deuteranopia (green-blind)

#1F62B8

Tritanopia (blue-blind)

#007A87

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3166ba;
/* rgb */ color: rgb(49, 102, 186);
/* oklch */ color: oklch(51.9% 0.144 259.3);

Tailwind

colors: {
  custom: {
    50: '#7b91cf',
    500: '#3166ba',
    950: '#000000',
  },
}

SCSS

$custom: #3166ba;
$custom-light: #7b91cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3166ba",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 186
  },
  "hsl": {
    "h": 216.788,
    "s": 58.298,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5191,
    "c": 0.14411,
    "h": 259.3
  },
  "luminance": 0.13701
}

Semantic roles & 50–950 ramp

primary

#3166BA

secondary

#C9AC7E

accent

#A546E2

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3166BA

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

Preview Lab → · Contrast checker → · Palette generator →