#665BD3#665BD3

#665BD3 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.6% C 0.178 H 282.9°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#665BD3
RGB	rgb(102, 91, 211)
HSL	hsl(246, 58%, 59%)
HSV	hsv(246, 57%, 83%)
CMYK	cmyk(51.7%, 56.9%, 0%, 17.3%)
CIE-LAB	lab(45.65, 36.43, -60.73)
CIE-LCH	lch(45.65, 70.82, 300.96°)
OKLab	oklab(54.63% 0.0398 -0.1738)
OKLCH	oklch(54.63% 0.178 282.9)
XYZ	xyz(20.9749, 15.0089, 63.4072)
Luminance	0.1501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BD3 #C8D35B

analogous

#5B8CD3 #665BD3 #A25BD3

triadic

#665BD3 #D3665B #5BD366

tetradic

#665BD3 #D35B8C #C8D35B #5BD3A2

square

#665BD3 #D35B8C #C8D35B #5BD3A2

split-complementary

#665BD3 #D3A25B #8CD35B

monochromatic

#2F268E #4033BE #665BD3 #938BE0 #C0BCED

Accessibility & contrast

On white

5.25

#665BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#665BD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BD3

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BD3	#FFFFFF	#000000	##FFFFFF
##665BD3	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D7

Deuteranopia (green-blind)

#0068D0

Tritanopia (blue-blind)

#3A778E

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #665bd3;
/* rgb */ color: rgb(102, 91, 211);
/* oklch */ color: oklch(54.6% 0.178 282.9);

Tailwind

colors: {
  custom: {
    50: '#9a8ae1',
    500: '#665bd3',
    950: '#000000',
  },
}

SCSS

$custom: #665bd3;
$custom-light: #9a8ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#665bd3",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 211
  },
  "hsl": {
    "h": 245.5,
    "s": 57.692,
    "l": 59.216
  },
  "oklch": {
    "l": 0.54634,
    "c": 0.17827,
    "h": 282.9
  },
  "luminance": 0.1501
}

Semantic roles & 50–950 ramp

primary

#665BD3

secondary

#D8DCAD

accent

#E147D3

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #665BD3

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

Preview Lab → · Contrast checker → · Palette generator →