#666AFD#666AFD

#666AFD is a mid, highly saturated blue. Relative luminance 0.202; OKLCH L 60.3% C 0.214 H 276.7°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#666AFD
RGB	rgb(102, 106, 253)
HSL	hsl(238, 97%, 70%)
HSV	hsv(238, 60%, 99%)
CMYK	cmyk(59.7%, 58.1%, 0%, 0.8%)
CIE-LAB	lab(52.09, 40.62, -73.93)
CIE-LCH	lch(52.09, 84.36, 298.79°)
OKLab	oklab(60.33% 0.0249 -0.2125)
OKLCH	oklch(60.33% 0.214 276.7)
XYZ	xyz(28.3574, 20.2225, 95.3185)
Luminance	0.2023 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AFD #FDF966

analogous

#66B5FD #666AFD #AE66FD

triadic

#666AFD #FD666A #6AFD66

tetradic

#666AFD #FD66B5 #FDF966 #66FDAE

square

#666AFD #FD66B5 #FDF966 #66FDAE

split-complementary

#666AFD #FDAE66 #B5FD66

monochromatic

#0309E6 #2A2FFC #666AFD #A2A5FE #DFE0FF

Accessibility & contrast

On white

4.16

#666AFD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#666AFD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AFD

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AFD	#FFFFFF	#000000	##000000
##666AFD	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0083FF

Deuteranopia (green-blind)

#0076FA

Tritanopia (blue-blind)

#008EA9

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #666afd;
/* rgb */ color: rgb(102, 106, 253);
/* oklch */ color: oklch(60.3% 0.214 276.7);

Tailwind

colors: {
  custom: {
    50: '#9f94ff',
    500: '#666afd',
    950: '#000000',
  },
}

SCSS

$custom: #666afd;
$custom-light: #9f94ff;
$custom-dark: #000000;

JSON

{
  "hex": "#666afd",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 253
  },
  "hsl": {
    "h": 238.411,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.60331,
    "c": 0.21397,
    "h": 276.7
  },
  "luminance": 0.20225
}

Semantic roles & 50–950 ramp

primary

#666AFD

secondary

#F5F4CA

accent

#DF00E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #666AFD

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

Preview Lab → · Contrast checker → · Palette generator →