#666DE6#666DE6

#666DE6 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 59.2% C 0.180 H 276.9°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#666DE6
RGB	rgb(102, 109, 230)
HSL	hsl(237, 72%, 65%)
HSV	hsv(237, 56%, 90%)
CMYK	cmyk(55.7%, 52.6%, 0%, 9.8%)
CIE-LAB	lab(51.24, 31.51, -62.47)
CIE-LCH	lch(51.24, 69.97, 296.77°)
OKLab	oklab(59.2% 0.0216 -0.1788)
OKLCH	oklch(59.2% 0.18 276.9)
XYZ	xyz(25.2265, 19.4735, 77.2770)
Luminance	0.1948 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DE6 #E6DF66

analogous

#66ADE6 #666DE6 #9F66E6

triadic

#666DE6 #E6666D #6DE666

tetradic

#666DE6 #E666AD #E6DF66 #66E69F

square

#666DE6 #E666AD #E6DF66 #66E69F

split-complementary

#666DE6 #E69F66 #ADE666

monochromatic

#1D26B4 #313BDD #666DE6 #9B9FEF #CFD1F7

Accessibility & contrast

On white

4.29

#666DE6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#666DE6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666DE6

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DE6	#FFFFFF	#000000	##000000
##666DE6	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#267FEA

Deuteranopia (green-blind)

#0075E3

Tritanopia (blue-blind)

#1F899F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #666de6;
/* rgb */ color: rgb(102, 109, 230);
/* oklch */ color: oklch(59.2% 0.180 276.9);

Tailwind

colors: {
  custom: {
    50: '#9b96ef',
    500: '#666de6',
    950: '#000000',
  },
}

SCSS

$custom: #666de6;
$custom-light: #9b96ef;
$custom-dark: #000000;

JSON

{
  "hex": "#666de6",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 230
  },
  "hsl": {
    "h": 236.719,
    "s": 71.91,
    "l": 65.098
  },
  "oklch": {
    "l": 0.59201,
    "c": 0.18008,
    "h": 276.9
  },
  "luminance": 0.19475
}

Semantic roles & 50–950 ramp

primary

#666DE6

secondary

#EAE7BE

accent

#C912D4

background

#FAF9FE

surface

#F4F2FD

border

#CECCD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666DE6

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

Preview Lab → · Contrast checker → · Palette generator →