#666AF4#666AF4

#666AF4 is a mid, highly saturated blue. Relative luminance 0.197; OKLCH L 59.7% C 0.202 H 277.1°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#666AF4
RGB	rgb(102, 106, 244)
HSL	hsl(238, 87%, 68%)
HSV	hsv(238, 58%, 96%)
CMYK	cmyk(58.2%, 56.6%, 0%, 4.3%)
CIE-LAB	lab(51.45, 37.76, -69.96)
CIE-LCH	lch(51.45, 79.50, 298.36°)
OKLab	oklab(59.66% 0.025 -0.2008)
OKLCH	oklch(59.66% 0.202 277.1)
XYZ	xyz(26.9574, 19.6625, 87.9451)
Luminance	0.1966 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AF4 #F4F066

analogous

#66B1F4 #666AF4 #A966F4

triadic

#666AF4 #F4666A #6AF466

tetradic

#666AF4 #F466B1 #F4F066 #66F4A9

square

#666AF4 #F466B1 #F4F066 #66F4A9

split-complementary

#666AF4 #F4A966 #B1F466

monochromatic

#0F14D1 #2D32F0 #666AF4 #9FA2F8 #D8D9FC

Accessibility & contrast

On white

4.26

#666AF4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#666AF4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AF4

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AF4	#FFFFFF	#000000	##000000
##666AF4	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0081F9

Deuteranopia (green-blind)

#0075F1

Tritanopia (blue-blind)

#008BA5

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666af4;
/* rgb */ color: rgb(102, 106, 244);
/* oklch */ color: oklch(59.7% 0.202 277.1);

Tailwind

colors: {
  custom: {
    50: '#9e94f9',
    500: '#666af4',
    950: '#000000',
  },
}

SCSS

$custom: #666af4;
$custom-light: #9e94f9;
$custom-dark: #000000;

JSON

{
  "hex": "#666af4",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 244
  },
  "hsl": {
    "h": 238.31,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.59661,
    "c": 0.20237,
    "h": 277.1
  },
  "luminance": 0.19665
}

Semantic roles & 50–950 ramp

primary

#666AF4

secondary

#F1F0C5

accent

#DD02E3

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D17

muted

#7F7E85

Preview Lab

Preview with #666AF4

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

Preview Lab → · Contrast checker → · Palette generator →