#666DCA#666DCA

#666DCA is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.4% C 0.141 H 277.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#666DCA
RGB	rgb(102, 109, 202)
HSL	hsl(236, 49%, 60%)
HSV	hsv(236, 50%, 79%)
CMYK	cmyk(49.5%, 46%, 0%, 20.8%)
CIE-LAB	lab(49.53, 22.71, -49.34)
CIE-LCH	lch(49.53, 54.32, 294.71°)
OKLab	oklab(57.36% 0.019 -0.1402)
OKLCH	oklch(57.36% 0.141 277.7)
XYZ	xyz(21.6055, 18.0251, 58.2064)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DCA #CAC366

analogous

#669FCA #666DCA #9166CA

triadic

#666DCA #CA666D #6DCA66

tetradic

#666DCA #CA669F #CAC366 #66CA91

square

#666DCA #CA669F #CAC366 #66CA91

split-complementary

#666DCA #CA9166 #9FCA66

monochromatic

#2F3587 #3E47B4 #666DCA #9398DA #C1C4E9

Accessibility & contrast

On white

4.56

#666DCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#666DCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666DCA

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DCA	#FFFFFF	#000000	##000000
##666DCA	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#457ACD

Deuteranopia (green-blind)

#3C72C8

Tritanopia (blue-blind)

#3F8192

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #666dca;
/* rgb */ color: rgb(102, 109, 202);
/* oklch */ color: oklch(57.4% 0.141 277.7);

Tailwind

colors: {
  custom: {
    50: '#9896db',
    500: '#666dca',
    950: '#000000',
  },
}

SCSS

$custom: #666dca;
$custom-light: #9896db;
$custom-dark: #000000;

JSON

{
  "hex": "#666dca",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 202
  },
  "hsl": {
    "h": 235.8,
    "s": 48.544,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57362,
    "c": 0.14146,
    "h": 277.7
  },
  "luminance": 0.18026
}

Semantic roles & 50–950 ramp

primary

#666DCA

secondary

#D9D7B2

accent

#CF50D8

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #666DCA

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

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