#6B66CB#6B66CB

#6B66CB is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.5% C 0.152 H 282.6°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#6B66CB
RGB	rgb(107, 102, 203)
HSL	hsl(243, 49%, 60%)
HSV	hsv(243, 50%, 80%)
CMYK	cmyk(47.3%, 49.8%, 0%, 20.4%)
CIE-LAB	lab(48.18, 28.43, -52.04)
CIE-LCH	lch(48.18, 59.30, 298.65°)
OKLab	oklab(56.46% 0.0332 -0.148)
OKLCH	oklch(56.46% 0.152 282.6)
XYZ	xyz(21.5910, 16.9393, 58.6203)
Luminance	0.1694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6B66CB #C6CB66

analogous

#6694CB #6B66CB #9D66CB

triadic

#6B66CB #CB6B66 #66CB6B

tetradic

#6B66CB #CB6694 #C6CB66 #66CB9D

square

#6B66CB #CB6694 #C6CB66 #66CB9D

split-complementary

#6B66CB #CB9D66 #94CB66

monochromatic

#332E88 #443EB6 #6B66CB #9794DB #C3C1EA

Accessibility & contrast

On white

4.79

#6B66CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#6B66CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6B66CB

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6B66CB	#FFFFFF	#000000	##FFFFFF
##6B66CB	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3876CF

Deuteranopia (green-blind)

#326FC9

Tritanopia (blue-blind)

#4A7C8F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #6b66cb;
/* rgb */ color: rgb(107, 102, 203);
/* oklch */ color: oklch(56.5% 0.152 282.6);

Tailwind

colors: {
  custom: {
    50: '#9b91db',
    500: '#6b66cb',
    950: '#000000',
  },
}

SCSS

$custom: #6b66cb;
$custom-light: #9b91db;
$custom-dark: #000000;

JSON

{
  "hex": "#6b66cb",
  "rgb": {
    "r": 107,
    "g": 102,
    "b": 203
  },
  "hsl": {
    "h": 242.97,
    "s": 49.268,
    "l": 59.804
  },
  "oklch": {
    "l": 0.5646,
    "c": 0.1517,
    "h": 282.6
  },
  "luminance": 0.1694
}

Semantic roles & 50–950 ramp

primary

#6B66CB

secondary

#D8DAB3

accent

#D94FD2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0D15

muted

#7E7D83

Preview Lab

Preview with #6B66CB

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

Preview Lab → · Contrast checker → · Palette generator →