#666ECE#666ECE

#666ECE is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.8% C 0.146 H 277.2°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#666ECE
RGB	rgb(102, 110, 206)
HSL	hsl(235, 51%, 60%)
HSV	hsv(235, 50%, 81%)
CMYK	cmyk(50.5%, 46.6%, 0%, 19.2%)
CIE-LAB	lab(50.02, 23.34, -50.85)
CIE-LCH	lch(50.02, 55.95, 294.66°)
OKLab	oklab(57.81% 0.0183 -0.1446)
OKLCH	oklch(57.81% 0.146 277.2)
XYZ	xyz(22.1925, 18.4316, 60.7688)
Luminance	0.1843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666ECE #CEC666

analogous

#66A2CE #666ECE #9266CE

triadic

#666ECE #CE666E #6ECE66

tetradic

#666ECE #CE66A2 #CEC666 #66CE92

square

#666ECE #CE66A2 #CEC666 #66CE92

split-complementary

#666ECE #CE9266 #A2CE66

monochromatic

#2D348D #3C46BB #666ECE #949ADD #C3C6EC

Accessibility & contrast

On white

4.48

#666ECE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#666ECE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666ECE

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666ECE	#FFFFFF	#000000	##000000
##666ECE	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#447BD2

Deuteranopia (green-blind)

#3A73CC

Tritanopia (blue-blind)

#3C8394

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666ece;
/* rgb */ color: rgb(102, 110, 206);
/* oklch */ color: oklch(57.8% 0.146 277.2);

Tailwind

colors: {
  custom: {
    50: '#9897dd',
    500: '#666ece',
    950: '#000000',
  },
}

SCSS

$custom: #666ece;
$custom-light: #9897dd;
$custom-dark: #000000;

JSON

{
  "hex": "#666ece",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 206
  },
  "hsl": {
    "h": 235.385,
    "s": 51.485,
    "l": 60.392
  },
  "oklch": {
    "l": 0.57807,
    "c": 0.14575,
    "h": 277.2
  },
  "luminance": 0.18433
}

Semantic roles & 50–950 ramp

primary

#666ECE

secondary

#DCD9B4

accent

#B327BF

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #666ECE

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

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