#666AE8#666AE8

#666AE8 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.8% C 0.187 H 277.6°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#666AE8
RGB	rgb(102, 106, 232)
HSL	hsl(238, 74%, 65%)
HSV	hsv(238, 56%, 91%)
CMYK	cmyk(56%, 54.3%, 0%, 9%)
CIE-LAB	lab(50.64, 33.96, -64.57)
CIE-LCH	lch(50.64, 72.95, 297.74°)
OKLab	oklab(58.79% 0.0247 -0.185)
OKLCH	oklch(58.79% 0.187 277.6)
XYZ	xyz(25.1944, 18.9573, 78.6598)
Luminance	0.1896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AE8 #E8E466

analogous

#66ABE8 #666AE8 #A366E8

triadic

#666AE8 #E8666A #6AE866

tetradic

#666AE8 #E866AB #E8E466 #66E8A3

square

#666AE8 #E866AB #E8E466 #66E8A3

split-complementary

#666AE8 #E8A366 #ABE866

monochromatic

#1C20B8 #3136E0 #666AE8 #9B9EF0 #D0D2F8

Accessibility & contrast

On white

4.38

#666AE8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#666AE8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AE8

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AE8	#FFFFFF	#000000	##000000
##666AE8	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#137EEC

Deuteranopia (green-blind)

#0073E5

Tritanopia (blue-blind)

#1C879F

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666ae8;
/* rgb */ color: rgb(102, 106, 232);
/* oklch */ color: oklch(58.8% 0.187 277.6);

Tailwind

colors: {
  custom: {
    50: '#9c94f0',
    500: '#666ae8',
    950: '#000000',
  },
}

SCSS

$custom: #666ae8;
$custom-light: #9c94f0;
$custom-dark: #000000;

JSON

{
  "hex": "#666ae8",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 232
  },
  "hsl": {
    "h": 238.154,
    "s": 73.864,
    "l": 65.49
  },
  "oklch": {
    "l": 0.58794,
    "c": 0.18661,
    "h": 277.6
  },
  "luminance": 0.18959
}

Semantic roles & 50–950 ramp

primary

#666AE8

secondary

#EBE9BF

accent

#D010D6

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666AE8

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

Preview Lab → · Contrast checker → · Palette generator →