#665EF7#665EF7

#665EF7 is a mid, highly saturated blue. Relative luminance 0.175; OKLCH L 57.9% C 0.221 H 279.3°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#665EF7
RGB	rgb(102, 94, 247)
HSL	hsl(243, 91%, 67%)
HSV	hsv(243, 62%, 97%)
CMYK	cmyk(58.7%, 61.9%, 0%, 3.1%)
CIE-LAB	lab(48.94, 45.77, -75.72)
CIE-LCH	lch(48.94, 88.48, 301.15°)
OKLab	oklab(57.88% 0.0356 -0.2178)
OKLCH	oklch(57.88% 0.221 279.3)
XYZ	xyz(26.2654, 17.5437, 89.9798)
Luminance	0.1755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EF7 #EFF75E

analogous

#5EA3F7 #665EF7 #B25EF7

triadic

#665EF7 #F7665E #5EF766

tetradic

#665EF7 #F75EA3 #EFF75E #5EF7B2

square

#665EF7 #F75EA3 #EFF75E #5EF7B2

split-complementary

#665EF7 #F7B25E #A3F75E

monochromatic

#150AD0 #2F24F4 #665EF7 #9D98FA #D5D3FD

Accessibility & contrast

On white

4.66

#665EF7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#665EF7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #665EF7

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EF7	#FFFFFF	#000000	##FFFFFF
##665EF7	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AFC

Deuteranopia (green-blind)

#006EF4

Tritanopia (blue-blind)

#0084A2

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #665ef7;
/* rgb */ color: rgb(102, 94, 247);
/* oklch */ color: oklch(57.9% 0.221 279.3);

Tailwind

colors: {
  custom: {
    50: '#9f8cfb',
    500: '#665ef7',
    950: '#000000',
  },
}

SCSS

$custom: #665ef7;
$custom-light: #9f8cfb;
$custom-dark: #000000;

JSON

{
  "hex": "#665ef7",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 247
  },
  "hsl": {
    "h": 243.137,
    "s": 90.533,
    "l": 66.863
  },
  "oklch": {
    "l": 0.57876,
    "c": 0.22073,
    "h": 279.3
  },
  "luminance": 0.17546
}

Semantic roles & 50–950 ramp

primary

#665EF7

secondary

#EEF1C0

accent

#E600DA

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #665EF7

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

Preview Lab → · Contrast checker → · Palette generator →