#665BCC#665BCC

#665BCC is a mid, vivid blue. Relative luminance 0.147; OKLCH L 54.1% C 0.169 H 283.6°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#665BCC
RGB	rgb(102, 91, 204)
HSL	hsl(246, 53%, 58%)
HSV	hsv(246, 55%, 80%)
CMYK	cmyk(50%, 55.4%, 0%, 20%)
CIE-LAB	lab(45.17, 34.30, -57.48)
CIE-LCH	lch(45.17, 66.93, 300.82°)
OKLab	oklab(54.13% 0.0398 -0.1642)
OKLCH	oklch(54.13% 0.169 283.6)
XYZ	xyz(20.1164, 14.6655, 58.8858)
Luminance	0.1467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BCC #C1CC5B

analogous

#5B88CC #665BCC #9F5BCC

triadic

#665BCC #CC665B #5BCC66

tetradic

#665BCC #CC5B88 #C1CC5B #5BCC9F

square

#665BCC #CC5B88 #C1CC5B #5BCC9F

split-complementary

#665BCC #CC9F5B #88CC5B

monochromatic

#322984 #4337B2 #665BCC #928ADB #BDB8E9

Accessibility & contrast

On white

5.34

#665BCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#665BCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BCC

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BCC	#FFFFFF	#000000	##FFFFFF
##665BCC	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#136ED0

Deuteranopia (green-blind)

#0467CA

Tritanopia (blue-blind)

#40748B

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #665bcc;
/* rgb */ color: rgb(102, 91, 204);
/* oklch */ color: oklch(54.1% 0.169 283.6);

Tailwind

colors: {
  custom: {
    50: '#9989dc',
    500: '#665bcc',
    950: '#000000',
  },
}

SCSS

$custom: #665bcc;
$custom-light: #9989dc;
$custom-dark: #000000;

JSON

{
  "hex": "#665bcc",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 204
  },
  "hsl": {
    "h": 245.841,
    "s": 52.558,
    "l": 57.843
  },
  "oklch": {
    "l": 0.54132,
    "c": 0.16895,
    "h": 283.6
  },
  "luminance": 0.14667
}

Semantic roles & 50–950 ramp

primary

#665BCC

secondary

#D4D8AB

accent

#DC4CCE

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #665BCC

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

Preview Lab → · Contrast checker → · Palette generator →