#665BF9#665BF9

#665BF9 is a mid, highly saturated blue. Relative luminance 0.171; OKLCH L 57.6% C 0.227 H 279.6°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#665BF9
RGB	rgb(102, 91, 249)
HSL	hsl(244, 93%, 67%)
HSV	hsv(244, 63%, 98%)
CMYK	cmyk(59%, 63.5%, 0%, 2.4%)
CIE-LAB	lab(48.44, 48.11, -77.65)
CIE-LCH	lch(48.44, 91.34, 301.78°)
OKLab	oklab(57.56% 0.038 -0.2235)
OKLCH	oklch(57.56% 0.227 279.6)
XYZ	xyz(26.3140, 17.1446, 91.5268)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BF9 #EEF95B

analogous

#5B9FF9 #665BF9 #B55BF9

triadic

#665BF9 #F9665B #5BF966

tetradic

#665BF9 #F95B9F #EEF95B #5BF9B5

square

#665BF9 #F95B9F #EEF95B #5BF9B5

split-complementary

#665BF9 #F9B55B #9FF95B

monochromatic

#1608D2 #2F20F7 #665BF9 #9D96FB #D4D1FD

Accessibility & contrast

On white

4.74

#665BF9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#665BF9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BF9

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BF9	#FFFFFF	#000000	##FFFFFF
##665BF9	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079FE

Deuteranopia (green-blind)

#006DF6

Tritanopia (blue-blind)

#0083A2

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #665bf9;
/* rgb */ color: rgb(102, 91, 249);
/* oklch */ color: oklch(57.6% 0.227 279.6);

Tailwind

colors: {
  custom: {
    50: '#9f8afc',
    500: '#665bf9',
    950: '#000000',
  },
}

SCSS

$custom: #665bf9;
$custom-light: #9f8afc;
$custom-dark: #000000;

JSON

{
  "hex": "#665bf9",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 249
  },
  "hsl": {
    "h": 244.177,
    "s": 92.941,
    "l": 66.667
  },
  "oklch": {
    "l": 0.57562,
    "c": 0.22671,
    "h": 279.6
  },
  "luminance": 0.17147
}

Semantic roles & 50–950 ramp

primary

#665BF9

secondary

#EEF1BE

accent

#E600D6

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #665BF9

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

Preview Lab → · Contrast checker → · Palette generator →