#666BF6#666BF6

#666BF6 is a mid, highly saturated blue. Relative luminance 0.200; OKLCH L 60.0% C 0.204 H 276.8°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#666BF6
RGB	rgb(102, 107, 246)
HSL	hsl(238, 89%, 68%)
HSV	hsv(238, 59%, 96%)
CMYK	cmyk(58.5%, 56.5%, 0%, 3.5%)
CIE-LAB	lab(51.83, 37.80, -70.46)
CIE-LCH	lch(51.83, 79.96, 298.21°)
OKLab	oklab(59.98% 0.0241 -0.2023)
OKLCH	oklch(59.98% 0.204 276.8)
XYZ	xyz(27.3664, 19.9920, 89.5876)
Luminance	0.1999 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BF6 #F6F166

analogous

#66B3F6 #666BF6 #A966F6

triadic

#666BF6 #F6666B #6BF666

tetradic

#666BF6 #F666B3 #F6F166 #66F6A9

square

#666BF6 #F666B3 #F6F166 #66F6A9

split-complementary

#666BF6 #F6A966 #B3F666

monochromatic

#0D13D5 #2C33F3 #666BF6 #A0A3F9 #DADBFD

Accessibility & contrast

On white

4.20

#666BF6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#666BF6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BF6

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BF6	#FFFFFF	#000000	##000000
##666BF6	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0082FB

Deuteranopia (green-blind)

#0076F3

Tritanopia (blue-blind)

#008CA6

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #666bf6;
/* rgb */ color: rgb(102, 107, 246);
/* oklch */ color: oklch(60.0% 0.204 276.8);

Tailwind

colors: {
  custom: {
    50: '#9e95fa',
    500: '#666bf6',
    950: '#000000',
  },
}

SCSS

$custom: #666bf6;
$custom-light: #9e95fa;
$custom-dark: #000000;

JSON

{
  "hex": "#666bf6",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 246
  },
  "hsl": {
    "h": 237.917,
    "s": 88.889,
    "l": 68.235
  },
  "oklch": {
    "l": 0.59983,
    "c": 0.20374,
    "h": 276.8
  },
  "luminance": 0.19994
}

Semantic roles & 50–950 ramp

primary

#666BF6

secondary

#F2F0C6

accent

#DE00E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D17

muted

#7F7E85

Preview Lab

Preview with #666BF6

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

Preview Lab → · Contrast checker → · Palette generator →