#3166C0#3166C0

#3166C0 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.3% C 0.152 H 260.3°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3166C0
RGB	rgb(49, 102, 192)
HSL	hsl(218, 59%, 47%)
HSV	hsv(218, 74%, 75%)
CMYK	cmyk(74.5%, 46.9%, 0%, 24.7%)
CIE-LAB	lab(44.18, 13.97, -52.31)
CIE-LCH	lch(44.18, 54.15, 284.95°)
OKLab	oklab(52.32% -0.0257 -0.1501)
OKLCH	oklch(52.32% 0.152 260.3)
XYZ	xyz(15.5290, 13.9598, 51.7350)
Luminance	0.1396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166C0 #C08B31

analogous

#31AEC0 #3166C0 #4331C0

triadic

#3166C0 #C03166 #66C031

tetradic

#3166C0 #C031AE #C08B31 #31C043

square

#3166C0 #C031AE #C08B31 #31C043

split-complementary

#3166C0 #C04331 #AEC031

monochromatic

#18325E #254C8F #3166C0 #5987D5 #8AAAE1

Accessibility & contrast

On white

5.54

#3166C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3166C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166C0

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166C0	#FFFFFF	#000000	##FFFFFF
##3166C0	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366FC3

Deuteranopia (green-blind)

#1162BE

Tritanopia (blue-blind)

#007B8A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3166c0;
/* rgb */ color: rgb(49, 102, 192);
/* oklch */ color: oklch(52.3% 0.152 260.3);

Tailwind

colors: {
  custom: {
    50: '#7c91d4',
    500: '#3166c0',
    950: '#000000',
  },
}

SCSS

$custom: #3166c0;
$custom-light: #7c91d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3166c0",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 192
  },
  "hsl": {
    "h": 217.762,
    "s": 59.336,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52321,
    "c": 0.15226,
    "h": 260.3
  },
  "luminance": 0.13961
}

Semantic roles & 50–950 ramp

primary

#3166C0

secondary

#CBB082

accent

#A845E3

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3166C0

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

Preview Lab → · Contrast checker → · Palette generator →