#665BD4#665BD4

#665BD4 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.7% C 0.180 H 282.8°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#665BD4
RGB	rgb(102, 91, 212)
HSL	hsl(245, 58%, 59%)
HSV	hsv(245, 57%, 83%)
CMYK	cmyk(51.9%, 57.1%, 0%, 16.9%)
CIE-LAB	lab(45.72, 36.74, -61.19)
CIE-LCH	lch(45.72, 71.37, 300.98°)
OKLab	oklab(54.71% 0.0398 -0.1751)
OKLCH	oklch(54.71% 0.18 282.8)
XYZ	xyz(21.1006, 15.0592, 64.0695)
Luminance	0.1506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BD4 #C9D45B

analogous

#5B8CD4 #665BD4 #A35BD4

triadic

#665BD4 #D4665B #5BD466

tetradic

#665BD4 #D45B8C #C9D45B #5BD4A3

square

#665BD4 #D45B8C #C9D45B #5BD4A3

split-complementary

#665BD4 #D4A35B #8CD45B

monochromatic

#2F268F #3F32C0 #665BD4 #938BE1 #C0BCED

Accessibility & contrast

On white

5.23

#665BD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#665BD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BD4

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BD4	#FFFFFF	#000000	##FFFFFF
##665BD4	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D8

Deuteranopia (green-blind)

#0068D1

Tritanopia (blue-blind)

#39778F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #665bd4;
/* rgb */ color: rgb(102, 91, 212);
/* oklch */ color: oklch(54.7% 0.180 282.8);

Tailwind

colors: {
  custom: {
    50: '#9a8ae2',
    500: '#665bd4',
    950: '#000000',
  },
}

SCSS

$custom: #665bd4;
$custom-light: #9a8ae2;
$custom-dark: #000000;

JSON

{
  "hex": "#665bd4",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 212
  },
  "hsl": {
    "h": 245.455,
    "s": 58.454,
    "l": 59.412
  },
  "oklch": {
    "l": 0.54707,
    "c": 0.1796,
    "h": 282.8
  },
  "luminance": 0.1506
}

Semantic roles & 50–950 ramp

primary

#665BD4

secondary

#D9DDAE

accent

#E246D4

background

#FAF8FD

surface

#F3F0FB

border

#CDCBD4

text

#0F0B15

muted

#7F7C83

Preview Lab

Preview with #665BD4

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

Preview Lab → · Contrast checker → · Palette generator →