#666BD6#666BD6

#666BD6 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.7% C 0.161 H 278.1°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#666BD6
RGB	rgb(102, 107, 214)
HSL	hsl(237, 58%, 62%)
HSV	hsv(237, 52%, 84%)
CMYK	cmyk(52.3%, 50%, 0%, 16.1%)
CIE-LAB	lab(49.73, 27.67, -55.86)
CIE-LCH	lch(49.73, 62.34, 296.36°)
OKLab	oklab(57.75% 0.0226 -0.1593)
OKLCH	oklch(57.75% 0.161 278.1)
XYZ	xyz(22.8710, 18.1938, 65.9119)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BD6 #D6D166

analogous

#66A3D6 #666BD6 #9966D6

triadic

#666BD6 #D6666B #6BD666

tetradic

#666BD6 #D666A3 #D6D166 #66D699

square

#666BD6 #D666A3 #D6D166 #66D699

split-complementary

#666BD6 #D69966 #A3D666

monochromatic

#292E99 #363CC9 #666BD6 #969AE3 #C7C8F0

Accessibility & contrast

On white

4.53

#666BD6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#666BD6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BD6

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BD6	#FFFFFF	#000000	##000000
##666BD6	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#367BDA

Deuteranopia (green-blind)

#2972D4

Tritanopia (blue-blind)

#358396

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #666bd6;
/* rgb */ color: rgb(102, 107, 214);
/* oklch */ color: oklch(57.7% 0.161 278.1);

Tailwind

colors: {
  custom: {
    50: '#9995e3',
    500: '#666bd6',
    950: '#000000',
  },
}

SCSS

$custom: #666bd6;
$custom-light: #9995e3;
$custom-dark: #000000;

JSON

{
  "hex": "#666bd6",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 214
  },
  "hsl": {
    "h": 237.321,
    "s": 57.732,
    "l": 61.961
  },
  "oklch": {
    "l": 0.57746,
    "c": 0.16093,
    "h": 278.1
  },
  "luminance": 0.18195
}

Semantic roles & 50–950 ramp

primary

#666BD6

secondary

#E1DFB7

accent

#BE20C5

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D15

muted

#7E7E84

Preview Lab

Preview with #666BD6

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

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