#3166BD#3166BD

#3166BD is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.1% C 0.148 H 259.8°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#3166BD
RGB	rgb(49, 102, 189)
HSL	hsl(217, 59%, 47%)
HSV	hsv(217, 74%, 74%)
CMYK	cmyk(74.1%, 46%, 0%, 25.9%)
CIE-LAB	lab(43.99, 12.84, -50.88)
CIE-LCH	lch(43.99, 52.47, 284.16°)
OKLab	oklab(52.11% -0.0262 -0.1459)
OKLCH	oklch(52.11% 0.148 259.8)
XYZ	xyz(15.2000, 13.8281, 50.0023)
Luminance	0.1383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166BD #BD8831

analogous

#31ACBD #3166BD #4231BD

triadic

#3166BD #BD3166 #66BD31

tetradic

#3166BD #BD31AC #BD8831 #31BD42

square

#3166BD #BD31AC #BD8831 #31BD42

split-complementary

#3166BD #BD4231 #ACBD31

monochromatic

#18325C #244C8C #3166BD #5887D4 #88AAE0

Accessibility & contrast

On white

5.58

#3166BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#3166BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166BD

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166BD	#FFFFFF	#000000	##FFFFFF
##3166BD	1.00	5.58	3.77	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396FC0

Deuteranopia (green-blind)

#1962BB

Tritanopia (blue-blind)

#007B88

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3166bd;
/* rgb */ color: rgb(49, 102, 189);
/* oklch */ color: oklch(52.1% 0.148 259.8);

Tailwind

colors: {
  custom: {
    50: '#7c91d1',
    500: '#3166bd',
    950: '#000000',
  },
}

SCSS

$custom: #3166bd;
$custom-light: #7c91d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3166bd",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 189
  },
  "hsl": {
    "h": 217.286,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52114,
    "c": 0.14819,
    "h": 259.8
  },
  "luminance": 0.1383
}

Semantic roles & 50–950 ramp

primary

#3166BD

secondary

#CAAE80

accent

#A746E2

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3166BD

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

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