#666DC2#666DC2

#666DC2 is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.9% C 0.130 H 277.9°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#666DC2
RGB	rgb(102, 109, 194)
HSL	hsl(235, 43%, 58%)
HSV	hsv(235, 47%, 76%)
CMYK	cmyk(47.4%, 43.8%, 0%, 23.9%)
CIE-LAB	lab(49.08, 20.24, -45.47)
CIE-LCH	lch(49.08, 49.77, 294.00°)
OKLab	oklab(56.87% 0.0178 -0.1288)
OKLCH	oklch(56.87% 0.13 277.9)
XYZ	xyz(20.6827, 17.6560, 53.3466)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DC2 #C2BB66

analogous

#669BC2 #666DC2 #8D66C2

triadic

#666DC2 #C2666D #6DC266

tetradic

#666DC2 #C2669B #C2BB66 #66C28D

square

#666DC2 #C2669B #C2BB66 #66C28D

split-complementary

#666DC2 #C28D66 #9BC266

monochromatic

#31377C #434BA8 #666DC2 #9297D3 #BEC1E5

Accessibility & contrast

On white

4.63

#666DC2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#666DC2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #666DC2

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DC2	#FFFFFF	#000000	##FFFFFF
##666DC2	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B78C5

Deuteranopia (green-blind)

#4471C0

Tritanopia (blue-blind)

#447F8E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #666dc2;
/* rgb */ color: rgb(102, 109, 194);
/* oklch */ color: oklch(56.9% 0.130 277.9);

Tailwind

colors: {
  custom: {
    50: '#9796d5',
    500: '#666dc2',
    950: '#000000',
  },
}

SCSS

$custom: #666dc2;
$custom-light: #9796d5;
$custom-dark: #000000;

JSON

{
  "hex": "#666dc2",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 194
  },
  "hsl": {
    "h": 235.435,
    "s": 42.991,
    "l": 58.039
  },
  "oklch": {
    "l": 0.56873,
    "c": 0.13005,
    "h": 277.9
  },
  "luminance": 0.17657
}

Semantic roles & 50–950 ramp

primary

#666DC2

secondary

#D4D1B0

accent

#C955D3

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #666DC2

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

Preview Lab → · Contrast checker → · Palette generator →