#6166CC#6166CC

#6166CC is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.8% C 0.155 H 278.0°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#6166CC
RGB	rgb(97, 102, 204)
HSL	hsl(237, 51%, 59%)
HSV	hsv(237, 52%, 80%)
CMYK	cmyk(52.5%, 50%, 0%, 20%)
CIE-LAB	lab(47.50, 26.53, -53.75)
CIE-LCH	lch(47.50, 59.94, 296.27°)
OKLab	oklab(55.78% 0.0216 -0.1533)
OKLCH	oklch(55.78% 0.155 278)
XYZ	xyz(20.5768, 16.4025, 59.1968)
Luminance	0.1640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6166CC #CCC761

analogous

#619CCC #6166CC #9261CC

triadic

#6166CC #CC6166 #66CC61

tetradic

#6166CC #CC619C #CCC761 #61CC92

square

#6166CC #CC619C #CCC761 #61CC92

split-complementary

#6166CC #CC9261 #9CCC61

monochromatic

#2C3087 #3B40B5 #6166CC #8F93DB #BEC0EA

Accessibility & contrast

On white

4.91

#6166CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#6166CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6166CC

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6166CC	#FFFFFF	#000000	##FFFFFF
##6166CC	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3475D0

Deuteranopia (green-blind)

#276DCA

Tritanopia (blue-blind)

#327D8F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #6166cc;
/* rgb */ color: rgb(97, 102, 204);
/* oklch */ color: oklch(55.8% 0.155 278.0);

Tailwind

colors: {
  custom: {
    50: '#9591dc',
    500: '#6166cc',
    950: '#000000',
  },
}

SCSS

$custom: #6166cc;
$custom-light: #9591dc;
$custom-dark: #000000;

JSON

{
  "hex": "#6166cc",
  "rgb": {
    "r": 97,
    "g": 102,
    "b": 204
  },
  "hsl": {
    "h": 237.196,
    "s": 51.196,
    "l": 59.02
  },
  "oklch": {
    "l": 0.55776,
    "c": 0.15483,
    "h": 278
  },
  "luminance": 0.16404
}

Semantic roles & 50–950 ramp

primary

#6166CC

secondary

#D9D7AF

accent

#D44DDB

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #6166CC

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

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