#666ED5#666ED5

#666ED5 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.3% C 0.156 H 277.1°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#666ED5
RGB	rgb(102, 110, 213)
HSL	hsl(236, 57%, 62%)
HSV	hsv(236, 52%, 84%)
CMYK	cmyk(52.1%, 48.4%, 0%, 16.5%)
CIE-LAB	lab(50.43, 25.53, -54.17)
CIE-LCH	lch(50.43, 59.89, 295.23°)
OKLab	oklab(58.25% 0.0192 -0.1543)
OKLCH	oklch(58.25% 0.156 277.1)
XYZ	xyz(23.0619, 18.7793, 65.3474)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666ED5 #D5CD66

analogous

#66A6D5 #666ED5 #9666D5

triadic

#666ED5 #D5666E #6ED566

tetradic

#666ED5 #D566A6 #D5CD66 #66D596

square

#666ED5 #D566A6 #D5CD66 #66D596

split-complementary

#666ED5 #D59666 #A6D566

monochromatic

#293197 #3741C7 #666ED5 #969CE2 #C6C9EF

Accessibility & contrast

On white

4.42

#666ED5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#666ED5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666ED5

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666ED5	#FFFFFF	#000000	##000000
##666ED5	1.00	4.42	4.76	4.76
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7DD9

Deuteranopia (green-blind)

#3274D3

Tritanopia (blue-blind)

#358597

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #666ed5;
/* rgb */ color: rgb(102, 110, 213);
/* oklch */ color: oklch(58.3% 0.156 277.1);

Tailwind

colors: {
  custom: {
    50: '#9997e2',
    500: '#666ed5',
    950: '#000000',
  },
}

SCSS

$custom: #666ed5;
$custom-light: #9997e2;
$custom-dark: #000000;

JSON

{
  "hex": "#666ed5",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 213
  },
  "hsl": {
    "h": 235.676,
    "s": 56.923,
    "l": 61.765
  },
  "oklch": {
    "l": 0.58253,
    "c": 0.15553,
    "h": 277.1
  },
  "luminance": 0.18781
}

Semantic roles & 50–950 ramp

primary

#666ED5

secondary

#E0DDB7

accent

#B921C4

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #666ED5

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

Preview Lab → · Contrast checker → · Palette generator →