#666FCD#666FCD

#666FCD is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.9% C 0.143 H 276.8°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#666FCD
RGB	rgb(102, 111, 205)
HSL	hsl(235, 51%, 60%)
HSV	hsv(235, 50%, 80%)
CMYK	cmyk(50.2%, 45.9%, 0%, 19.6%)
CIE-LAB	lab(50.22, 22.42, -49.96)
CIE-LCH	lch(50.22, 54.75, 294.17°)
OKLab	oklab(57.94% 0.017 -0.142)
OKLCH	oklch(57.94% 0.143 276.8)
XYZ	xyz(22.1799, 18.6001, 60.1672)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FCD #CDC466

analogous

#66A3CD #666FCD #9066CD

triadic

#666FCD #CD666F #6FCD66

tetradic

#666FCD #CD66A3 #CDC466 #66CD90

square

#666FCD #CD66A3 #CDC466 #66CD90

split-complementary

#666FCD #CD9066 #A3CD66

monochromatic

#2D368B #3D47B9 #666FCD #949ADC #C2C6EB

Accessibility & contrast

On white

4.45

#666FCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#666FCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666FCD

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FCD	#FFFFFF	#000000	##000000
##666FCD	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#477CD0

Deuteranopia (green-blind)

#3D74CB

Tritanopia (blue-blind)

#3C8394

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666fcd;
/* rgb */ color: rgb(102, 111, 205);
/* oklch */ color: oklch(57.9% 0.143 276.8);

Tailwind

colors: {
  custom: {
    50: '#9898dd',
    500: '#666fcd',
    950: '#000000',
  },
}

SCSS

$custom: #666fcd;
$custom-light: #9898dd;
$custom-dark: #000000;

JSON

{
  "hex": "#666fcd",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 205
  },
  "hsl": {
    "h": 234.757,
    "s": 50.739,
    "l": 60.196
  },
  "oklch": {
    "l": 0.57941,
    "c": 0.14299,
    "h": 276.8
  },
  "luminance": 0.18601
}

Semantic roles & 50–950 ramp

primary

#666FCD

secondary

#DBD8B4

accent

#B127BE

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #666FCD

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

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