#3166C5#3166C5

#3166C5 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.7% C 0.159 H 261.0°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#3166C5
RGB	rgb(49, 102, 197)
HSL	hsl(219, 60%, 48%)
HSV	hsv(219, 75%, 77%)
CMYK	cmyk(75.1%, 48.2%, 0%, 22.7%)
CIE-LAB	lab(44.50, 15.84, -54.69)
CIE-LCH	lch(44.50, 56.94, 286.16°)
OKLab	oklab(52.67% -0.0249 -0.1571)
OKLCH	oklch(52.67% 0.159 261)
XYZ	xyz(16.0924, 14.1851, 54.7024)
Luminance	0.1419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166C5 #C59031

analogous

#31B0C5 #3166C5 #4631C5

triadic

#3166C5 #C53166 #66C531

tetradic

#3166C5 #C531B0 #C59031 #31C546

square

#3166C5 #C531B0 #C59031 #31C546

split-complementary

#3166C5 #C54631 #B0C531

monochromatic

#193363 #254D94 #3166C5 #5D88D7 #8EACE3

Accessibility & contrast

On white

5.47

#3166C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#3166C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166C5

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166C5	#FFFFFF	#000000	##FFFFFF
##3166C5	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3170C9

Deuteranopia (green-blind)

#0063C3

Tritanopia (blue-blind)

#007D8C

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3166c5;
/* rgb */ color: rgb(49, 102, 197);
/* oklch */ color: oklch(52.7% 0.159 261.0);

Tailwind

colors: {
  custom: {
    50: '#7d91d7',
    500: '#3166c5',
    950: '#000000',
  },
}

SCSS

$custom: #3166c5;
$custom-light: #7d91d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3166c5",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 197
  },
  "hsl": {
    "h": 218.514,
    "s": 60.163,
    "l": 48.235
  },
  "oklch": {
    "l": 0.52672,
    "c": 0.15902,
    "h": 261
  },
  "luminance": 0.14187
}

Semantic roles & 50–950 ramp

primary

#3166C5

secondary

#CDB385

accent

#AA44E3

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3166C5

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

Preview Lab → · Contrast checker → · Palette generator →