#666AF7#666AF7

#666AF7 is a mid, highly saturated blue. Relative luminance 0.198; OKLCH L 59.9% C 0.206 H 277.0°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#666AF7
RGB	rgb(102, 106, 247)
HSL	hsl(238, 90%, 68%)
HSV	hsv(238, 59%, 97%)
CMYK	cmyk(58.7%, 57.1%, 0%, 3.1%)
CIE-LAB	lab(51.66, 38.72, -71.29)
CIE-LCH	lch(51.66, 81.12, 298.51°)
OKLab	oklab(59.88% 0.025 -0.2047)
OKLCH	oklch(59.88% 0.206 277)
XYZ	xyz(27.4166, 19.8462, 90.3636)
Luminance	0.1985 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AF7 #F7F366

analogous

#66B2F7 #666AF7 #AA66F7

triadic

#666AF7 #F7666A #6AF766

tetradic

#666AF7 #F766B2 #F7F366 #66F7AA

square

#666AF7 #F766B2 #F7F366 #66F7AA

split-complementary

#666AF7 #F7AA66 #B2F766

monochromatic

#0B11D7 #2C31F4 #666AF7 #A0A3FA #DADBFD

Accessibility & contrast

On white

4.23

#666AF7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#666AF7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AF7

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AF7	#FFFFFF	#000000	##000000
##666AF7	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0081FC

Deuteranopia (green-blind)

#0075F4

Tritanopia (blue-blind)

#008CA6

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666af7;
/* rgb */ color: rgb(102, 106, 247);
/* oklch */ color: oklch(59.9% 0.206 277.0);

Tailwind

colors: {
  custom: {
    50: '#9e94fb',
    500: '#666af7',
    950: '#000000',
  },
}

SCSS

$custom: #666af7;
$custom-light: #9e94fb;
$custom-dark: #000000;

JSON

{
  "hex": "#666af7",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 247
  },
  "hsl": {
    "h": 238.345,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.59882,
    "c": 0.20626,
    "h": 277
  },
  "luminance": 0.19848
}

Semantic roles & 50–950 ramp

primary

#666AF7

secondary

#F2F1C7

accent

#DF00E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D17

muted

#7F7E85

Preview Lab

Preview with #666AF7

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

Preview Lab → · Contrast checker → · Palette generator →