#666EE2#666EE2

#666EE2 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 59.1% C 0.173 H 276.7°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#666EE2
RGB	rgb(102, 110, 226)
HSL	hsl(236, 68%, 64%)
HSV	hsv(236, 55%, 89%)
CMYK	cmyk(54.9%, 51.3%, 0%, 11.4%)
CIE-LAB	lab(51.23, 29.63, -60.24)
CIE-LCH	lch(51.23, 67.13, 296.20°)
OKLab	oklab(59.11% 0.0203 -0.1722)
OKLCH	oklch(59.11% 0.173 276.7)
XYZ	xyz(24.7785, 19.4660, 74.3884)
Luminance	0.1947 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EE2 #E2DA66

analogous

#66ACE2 #666EE2 #9C66E2

triadic

#666EE2 #E2666E #6EE266

tetradic

#666EE2 #E266AC #E2DA66 #66E29C

square

#666EE2 #E266AC #E2DA66 #66E29C

split-complementary

#666EE2 #E29C66 #ACE266

monochromatic

#212AAD #333DD8 #666EE2 #999FEC #CDD0F6

Accessibility & contrast

On white

4.29

#666EE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#666EE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666EE2

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EE2	#FFFFFF	#000000	##000000
##666EE2	1.00	4.29	4.89	4.89
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F7FE6

Deuteranopia (green-blind)

#1975E0

Tritanopia (blue-blind)

#25889E

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #666ee2;
/* rgb */ color: rgb(102, 110, 226);
/* oklch */ color: oklch(59.1% 0.173 276.7);

Tailwind

colors: {
  custom: {
    50: '#9b97ec',
    500: '#666ee2',
    950: '#000000',
  },
}

SCSS

$custom: #666ee2;
$custom-light: #9b97ec;
$custom-dark: #000000;

JSON

{
  "hex": "#666ee2",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 226
  },
  "hsl": {
    "h": 236.129,
    "s": 68.132,
    "l": 64.314
  },
  "oklch": {
    "l": 0.59113,
    "c": 0.17339,
    "h": 276.7
  },
  "luminance": 0.19468
}

Semantic roles & 50–950 ramp

primary

#666EE2

secondary

#E7E5BC

accent

#C415D0

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666EE2

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

Preview Lab → · Contrast checker → · Palette generator →