#666AE1#666AE1

#666AE1 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 58.3% C 0.177 H 277.9°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#666AE1
RGB	rgb(102, 106, 225)
HSL	hsl(238, 67%, 64%)
HSV	hsv(238, 55%, 88%)
CMYK	cmyk(54.7%, 52.9%, 0%, 11.8%)
CIE-LAB	lab(50.18, 31.74, -61.37)
CIE-LCH	lch(50.18, 69.09, 297.35°)
OKLab	oklab(58.3% 0.0244 -0.1756)
OKLCH	oklch(58.3% 0.177 277.9)
XYZ	xyz(24.2198, 18.5675, 73.5272)
Luminance	0.1857 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AE1 #E1DD66

analogous

#66A8E1 #666AE1 #A066E1

triadic

#666AE1 #E1666A #6AE166

tetradic

#666AE1 #E166A8 #E1DD66 #66E1A0

square

#666AE1 #E166A8 #E1DD66 #66E1A0

split-complementary

#666AE1 #E1A066 #A8E166

monochromatic

#2226AB #3338D7 #666AE1 #999CEB #CCCEF5

Accessibility & contrast

On white

4.46

#666AE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#666AE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AE1

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AE1	#FFFFFF	#000000	##000000
##666AE1	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#247CE5

Deuteranopia (green-blind)

#0472DE

Tritanopia (blue-blind)

#28859B

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666ae1;
/* rgb */ color: rgb(102, 106, 225);
/* oklch */ color: oklch(58.3% 0.177 277.9);

Tailwind

colors: {
  custom: {
    50: '#9b94eb',
    500: '#666ae1',
    950: '#000000',
  },
}

SCSS

$custom: #666ae1;
$custom-light: #9b94eb;
$custom-dark: #000000;

JSON

{
  "hex": "#666ae1",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 225
  },
  "hsl": {
    "h": 238.049,
    "s": 67.213,
    "l": 64.118
  },
  "oklch": {
    "l": 0.58304,
    "c": 0.17724,
    "h": 277.9
  },
  "luminance": 0.18569
}

Semantic roles & 50–950 ramp

primary

#666AE1

secondary

#E7E5BC

accent

#C916CF

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666AE1

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

Preview Lab → · Contrast checker → · Palette generator →