#666DEA#666DEA

#666DEA is a mid, vivid blue. Relative luminance 0.197; OKLCH L 59.5% C 0.185 H 276.8°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#666DEA
RGB	rgb(102, 109, 234)
HSL	hsl(237, 76%, 66%)
HSV	hsv(237, 56%, 92%)
CMYK	cmyk(56.4%, 53.4%, 0%, 8.2%)
CIE-LAB	lab(51.50, 32.78, -64.30)
CIE-LCH	lch(51.50, 72.17, 297.01°)
OKLab	oklab(59.48% 0.0218 -0.1841)
OKLCH	oklch(59.48% 0.185 276.8)
XYZ	xyz(25.7947, 19.7008, 80.2693)
Luminance	0.1970 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DEA #EAE366

analogous

#66AFEA #666DEA #A166EA

triadic

#666DEA #EA666D #6DEA66

tetradic

#666DEA #EA66AF #EAE366 #66EAA1

square

#666DEA #EA66AF #EAE366 #66EAA1

split-complementary

#666DEA #EAA166 #AFEA66

monochromatic

#1A22BC #303AE3 #666DEA #9CA0F1 #D2D4F9

Accessibility & contrast

On white

4.25

#666DEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#666DEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666DEA

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DEA	#FFFFFF	#000000	##000000
##666DEA	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E80EE

Deuteranopia (green-blind)

#0075E7

Tritanopia (blue-blind)

#168AA1

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666dea;
/* rgb */ color: rgb(102, 109, 234);
/* oklch */ color: oklch(59.5% 0.185 276.8);

Tailwind

colors: {
  custom: {
    50: '#9c96f1',
    500: '#666dea',
    950: '#000000',
  },
}

SCSS

$custom: #666dea;
$custom-light: #9c96f1;
$custom-dark: #000000;

JSON

{
  "hex": "#666dea",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 234
  },
  "hsl": {
    "h": 236.818,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.59479,
    "c": 0.18544,
    "h": 276.8
  },
  "luminance": 0.19703
}

Semantic roles & 50–950 ramp

primary

#666DEA

secondary

#ECE9C0

accent

#CD0DD8

background

#FAF9FE

surface

#F4F2FD

border

#CECCD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666DEA

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

Preview Lab → · Contrast checker → · Palette generator →