#665BC5#665BC5

#665BC5 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.6% C 0.160 H 284.4°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#665BC5
RGB	rgb(102, 91, 197)
HSL	hsl(246, 48%, 56%)
HSV	hsv(246, 54%, 77%)
CMYK	cmyk(48.2%, 53.8%, 0%, 22.7%)
CIE-LAB	lab(44.71, 32.17, -54.18)
CIE-LCH	lch(44.71, 63.01, 300.70°)
OKLab	oklab(53.64% 0.0395 -0.1545)
OKLCH	oklch(53.64% 0.16 284.4)
XYZ	xyz(19.2956, 14.3372, 54.5631)
Luminance	0.1434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BC5 #BAC55B

analogous

#5B85C5 #665BC5 #9B5BC5

triadic

#665BC5 #C5665B #5BC566

tetradic

#665BC5 #C55B85 #BAC55B #5BC59B

square

#665BC5 #C55B85 #BAC55B #5BC59B

split-complementary

#665BC5 #C59B5B #85C55B

monochromatic

#332B7A #463BA8 #665BC5 #9088D5 #BAB5E5

Accessibility & contrast

On white

5.43

#665BC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#665BC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BC5

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BC5	#FFFFFF	#000000	##FFFFFF
##665BC5	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#226DC9

Deuteranopia (green-blind)

#1C66C3

Tritanopia (blue-blind)

#457287

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665bc5;
/* rgb */ color: rgb(102, 91, 197);
/* oklch */ color: oklch(53.6% 0.160 284.4);

Tailwind

colors: {
  custom: {
    50: '#9889d7',
    500: '#665bc5',
    950: '#000000',
  },
}

SCSS

$custom: #665bc5;
$custom-light: #9889d7;
$custom-dark: #000000;

JSON

{
  "hex": "#665bc5",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 197
  },
  "hsl": {
    "h": 246.226,
    "s": 47.748,
    "l": 56.471
  },
  "oklch": {
    "l": 0.53643,
    "c": 0.1595,
    "h": 284.4
  },
  "luminance": 0.14338
}

Semantic roles & 50–950 ramp

primary

#665BC5

secondary

#CFD4A8

accent

#D750C9

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #665BC5

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

Preview Lab → · Contrast checker → · Palette generator →