#665AC5#665AC5

#665AC5 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.5% C 0.161 H 284.6°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#665AC5
RGB	rgb(102, 90, 197)
HSL	hsl(247, 48%, 56%)
HSV	hsv(247, 54%, 77%)
CMYK	cmyk(48.2%, 54.3%, 0%, 22.7%)
CIE-LAB	lab(44.47, 32.77, -54.57)
CIE-LCH	lch(44.47, 63.65, 300.99°)
OKLab	oklab(53.46% 0.0407 -0.1557)
OKLCH	oklch(53.46% 0.161 284.6)
XYZ	xyz(19.2107, 14.1674, 54.5348)
Luminance	0.1417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665AC5 #B9C55A

analogous

#5A84C5 #665AC5 #9C5AC5

triadic

#665AC5 #C5665A #5AC566

tetradic

#665AC5 #C55A84 #B9C55A #5AC59C

square

#665AC5 #C55A84 #B9C55A #5AC59C

split-complementary

#665AC5 #C59C5A #84C55A

monochromatic

#342B7A #473BA7 #665AC5 #9087D5 #BAB5E5

Accessibility & contrast

On white

5.48

#665AC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#665AC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665AC5

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665AC5	#FFFFFF	#000000	##FFFFFF
##665AC5	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F6CC9

Deuteranopia (green-blind)

#1966C3

Tritanopia (blue-blind)

#457287

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #665ac5;
/* rgb */ color: rgb(102, 90, 197);
/* oklch */ color: oklch(53.5% 0.161 284.6);

Tailwind

colors: {
  custom: {
    50: '#9889d7',
    500: '#665ac5',
    950: '#000000',
  },
}

SCSS

$custom: #665ac5;
$custom-light: #9889d7;
$custom-dark: #000000;

JSON

{
  "hex": "#665ac5",
  "rgb": {
    "r": 102,
    "g": 90,
    "b": 197
  },
  "hsl": {
    "h": 246.729,
    "s": 47.982,
    "l": 56.275
  },
  "oklch": {
    "l": 0.53464,
    "c": 0.16089,
    "h": 284.6
  },
  "luminance": 0.14168
}

Semantic roles & 50–950 ramp

primary

#665AC5

secondary

#CED3A7

accent

#D850C8

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #665AC5

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

Preview Lab → · Contrast checker → · Palette generator →