#665BC6#665BC6

#665BC6 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.7% C 0.161 H 284.2°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#665BC6
RGB	rgb(102, 91, 198)
HSL	hsl(246, 48%, 57%)
HSV	hsv(246, 54%, 78%)
CMYK	cmyk(48.5%, 54%, 0%, 22.4%)
CIE-LAB	lab(44.78, 32.47, -54.65)
CIE-LCH	lch(44.78, 63.57, 300.72°)
OKLab	oklab(53.71% 0.0396 -0.1559)
OKLCH	oklch(53.71% 0.161 284.2)
XYZ	xyz(19.4106, 14.3832, 55.1686)
Luminance	0.1438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BC6 #BBC65B

analogous

#5B86C6 #665BC6 #9C5BC6

triadic

#665BC6 #C6665B #5BC666

tetradic

#665BC6 #C65B86 #BBC65B #5BC69C

square

#665BC6 #C65B86 #BBC65B #5BC69C

split-complementary

#665BC6 #C69C5B #86C65B

monochromatic

#332B7C #463BA9 #665BC6 #9088D6 #BBB6E6

Accessibility & contrast

On white

5.42

#665BC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#665BC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BC6

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BC6	#FFFFFF	#000000	##FFFFFF
##665BC6	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#206DCA

Deuteranopia (green-blind)

#1A67C4

Tritanopia (blue-blind)

#447388

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665bc6;
/* rgb */ color: rgb(102, 91, 198);
/* oklch */ color: oklch(53.7% 0.161 284.2);

Tailwind

colors: {
  custom: {
    50: '#9889d8',
    500: '#665bc6',
    950: '#000000',
  },
}

SCSS

$custom: #665bc6;
$custom-light: #9889d8;
$custom-dark: #000000;

JSON

{
  "hex": "#665bc6",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 198
  },
  "hsl": {
    "h": 246.168,
    "s": 48.416,
    "l": 56.667
  },
  "oklch": {
    "l": 0.53712,
    "c": 0.16086,
    "h": 284.2
  },
  "luminance": 0.14384
}

Semantic roles & 50–950 ramp

primary

#665BC6

secondary

#D0D4A9

accent

#D850CA

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #665BC6

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

Preview Lab → · Contrast checker → · Palette generator →