#6166BB#6166BB

#6166BB is a mid, vivid blue. Relative luminance 0.156; OKLCH L 54.7% C 0.131 H 278.6°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#6166BB
RGB	rgb(97, 102, 187)
HSL	hsl(237, 40%, 56%)
HSV	hsv(237, 48%, 73%)
CMYK	cmyk(48.1%, 45.5%, 0%, 26.7%)
CIE-LAB	lab(46.49, 21.20, -45.57)
CIE-LCH	lch(46.49, 50.26, 294.95°)
OKLab	oklab(54.68% 0.0196 -0.1293)
OKLCH	oklch(54.68% 0.131 278.6)
XYZ	xyz(18.6480, 15.6310, 49.0385)
Luminance	0.1563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6166BB #BBB661

analogous

#6193BB #6166BB #8961BB

triadic

#6166BB #BB6166 #66BB61

tetradic

#6166BB #BB6193 #BBB661 #61BB89

square

#6166BB #BB6193 #BBB661 #61BB89

split-complementary

#6166BB #BB8961 #93BB61

monochromatic

#313471 #43489C #6166BB #8C8FCD #B7B9E0

Accessibility & contrast

On white

5.09

#6166BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#6166BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6166BB

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6166BB	#FFFFFF	#000000	##FFFFFF
##6166BB	1.00	5.09	4.13	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4372BE

Deuteranopia (green-blind)

#3C6BB9

Tritanopia (blue-blind)

#407887

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #6166bb;
/* rgb */ color: rgb(97, 102, 187);
/* oklch */ color: oklch(54.7% 0.131 278.6);

Tailwind

colors: {
  custom: {
    50: '#9391d0',
    500: '#6166bb',
    950: '#000000',
  },
}

SCSS

$custom: #6166bb;
$custom-light: #9391d0;
$custom-dark: #000000;

JSON

{
  "hex": "#6166bb",
  "rgb": {
    "r": 97,
    "g": 102,
    "b": 187
  },
  "hsl": {
    "h": 236.667,
    "s": 39.823,
    "l": 55.686
  },
  "oklch": {
    "l": 0.54684,
    "c": 0.13076,
    "h": 278.6
  },
  "luminance": 0.15632
}

Semantic roles & 50–950 ramp

primary

#6166BB

secondary

#CFCDA9

accent

#C958D0

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #6166BB

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

Preview Lab → · Contrast checker → · Palette generator →