#666EBE#666EBE

#666EBE is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.8% C 0.123 H 277.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#666EBE
RGB	rgb(102, 110, 190)
HSL	hsl(235, 40%, 57%)
HSV	hsv(235, 46%, 75%)
CMYK	cmyk(46.3%, 42.1%, 0%, 25.5%)
CIE-LAB	lab(49.12, 18.41, -43.09)
CIE-LCH	lch(49.12, 46.86, 293.13°)
OKLab	oklab(56.84% 0.0159 -0.1219)
OKLCH	oklch(56.84% 0.123 277.4)
XYZ	xyz(20.3468, 17.6933, 51.0482)
Luminance	0.1769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EBE #BEB666

analogous

#669ABE #666EBE #8A66BE

triadic

#666EBE #BE666E #6EBE66

tetradic

#666EBE #BE669A #BEB666 #66BE8A

square

#666EBE #BE669A #BEB666 #66BE8A

split-complementary

#666EBE #BE8A66 #9ABE66

monochromatic

#333977 #454DA2 #666EBE #9197D0 #BCBFE2

Accessibility & contrast

On white

4.63

#666EBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#666EBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #666EBE

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EBE	#FFFFFF	#000000	##FFFFFF
##666EBE	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F78C1

Deuteranopia (green-blind)

#4871BC

Tritanopia (blue-blind)

#477F8D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #666ebe;
/* rgb */ color: rgb(102, 110, 190);
/* oklch */ color: oklch(56.8% 0.123 277.4);

Tailwind

colors: {
  custom: {
    50: '#9697d2',
    500: '#666ebe',
    950: '#000000',
  },
}

SCSS

$custom: #666ebe;
$custom-light: #9697d2;
$custom-dark: #000000;

JSON

{
  "hex": "#666ebe",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 190
  },
  "hsl": {
    "h": 234.545,
    "s": 40.367,
    "l": 57.255
  },
  "oklch": {
    "l": 0.56837,
    "c": 0.1229,
    "h": 277.4
  },
  "luminance": 0.17694
}

Semantic roles & 50–950 ramp

primary

#666EBE

secondary

#D2CEAE

accent

#C558D0

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #666EBE

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

Preview Lab → · Contrast checker → · Palette generator →