#666ECD#666ECD

#666ECD is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.7% C 0.144 H 277.2°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#666ECD
RGB	rgb(102, 110, 205)
HSL	hsl(235, 51%, 60%)
HSV	hsv(235, 50%, 80%)
CMYK	cmyk(50.2%, 46.3%, 0%, 19.6%)
CIE-LAB	lab(49.96, 23.03, -50.37)
CIE-LCH	lch(49.96, 55.38, 294.57°)
OKLab	oklab(57.74% 0.0182 -0.1432)
OKLCH	oklch(57.74% 0.144 277.2)
XYZ	xyz(22.0714, 18.3831, 60.1310)
Luminance	0.1838 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666ECD #CDC566

analogous

#66A1CD #666ECD #9266CD

triadic

#666ECD #CD666E #6ECD66

tetradic

#666ECD #CD66A1 #CDC566 #66CD92

square

#666ECD #CD66A1 #CDC566 #66CD92

split-complementary

#666ECD #CD9266 #A1CD66

monochromatic

#2D358B #3D46B9 #666ECD #949ADC #C2C5EB

Accessibility & contrast

On white

4.49

#666ECD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#666ECD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666ECD

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666ECD	#FFFFFF	#000000	##000000
##666ECD	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#457BD1

Deuteranopia (green-blind)

#3B73CB

Tritanopia (blue-blind)

#3C8294

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666ecd;
/* rgb */ color: rgb(102, 110, 205);
/* oklch */ color: oklch(57.7% 0.144 277.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#666ecd",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 205
  },
  "hsl": {
    "h": 235.34,
    "s": 50.739,
    "l": 60.196
  },
  "oklch": {
    "l": 0.57744,
    "c": 0.14434,
    "h": 277.2
  },
  "luminance": 0.18384
}

Semantic roles & 50–950 ramp

primary

#666ECD

secondary

#DBD8B4

accent

#B227BE

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #666ECD

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

Preview Lab → · Contrast checker → · Palette generator →