#665CCE#665CCE

#665CCE is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.4% C 0.170 H 283.1°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#665CCE
RGB	rgb(102, 92, 206)
HSL	hsl(245, 54%, 58%)
HSV	hsv(245, 55%, 81%)
CMYK	cmyk(50.5%, 55.3%, 0%, 19.2%)
CIE-LAB	lab(45.54, 34.30, -58.03)
CIE-LCH	lch(45.54, 67.41, 300.59°)
OKLab	oklab(54.45% 0.0387 -0.1658)
OKLCH	oklch(54.45% 0.17 283.1)
XYZ	xyz(20.4439, 14.9342, 60.1859)
Luminance	0.1494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CCE #C4CE5C

analogous

#5C8BCE #665CCE #9F5CCE

triadic

#665CCE #CE665C #5CCE66

tetradic

#665CCE #CE5C8B #C4CE5C #5CCE9F

square

#665CCE #CE5C8B #C4CE5C #5CCE9F

split-complementary

#665CCE #CE9F5C #8BCE5C

monochromatic

#312987 #4237B6 #665CCE #928BDC #BEBAEA

Accessibility & contrast

On white

5.27

#665CCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#665CCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CCE

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CCE	#FFFFFF	#000000	##FFFFFF
##665CCE	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1370D2

Deuteranopia (green-blind)

#0168CC

Tritanopia (blue-blind)

#3E768C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #665cce;
/* rgb */ color: rgb(102, 92, 206);
/* oklch */ color: oklch(54.4% 0.170 283.1);

Tailwind

colors: {
  custom: {
    50: '#998ade',
    500: '#665cce',
    950: '#000000',
  },
}

SCSS

$custom: #665cce;
$custom-light: #998ade;
$custom-dark: #000000;

JSON

{
  "hex": "#665cce",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 206
  },
  "hsl": {
    "h": 245.263,
    "s": 53.774,
    "l": 58.431
  },
  "oklch": {
    "l": 0.5445,
    "c": 0.17027,
    "h": 283.1
  },
  "luminance": 0.14935
}

Semantic roles & 50–950 ramp

primary

#665CCE

secondary

#D6DAAC

accent

#DD4BD0

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0C15

muted

#7E7D83

Preview Lab

Preview with #665CCE

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

Preview Lab → · Contrast checker → · Palette generator →