#665EE9#665EE9

#665EE9 is a mid, highly saturated blue. Relative luminance 0.167; OKLCH L 56.8% C 0.203 H 280.3°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#665EE9
RGB	rgb(102, 94, 233)
HSL	hsl(243, 76%, 64%)
HSV	hsv(243, 60%, 91%)
CMYK	cmyk(56.2%, 59.7%, 0%, 8.6%)
CIE-LAB	lab(47.89, 41.43, -69.57)
CIE-LCH	lch(47.89, 80.98, 300.78°)
OKLab	oklab(56.78% 0.0364 -0.1998)
OKLCH	oklch(56.78% 0.203 280.3)
XYZ	xyz(24.1856, 16.7118, 79.0262)
Luminance	0.1671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EE9 #E1E95E

analogous

#5E9CE9 #665EE9 #AC5EE9

triadic

#665EE9 #E9665E #5EE966

tetradic

#665EE9 #E95E9C #E1E95E #5EE9AC

square

#665EE9 #E95E9C #E1E95E #5EE9AC

split-complementary

#665EE9 #E9AC5E #9CE95E

monochromatic

#2219B4 #3328E2 #665EE9 #9994F0 #CCCAF8

Accessibility & contrast

On white

4.84

#665EE9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#665EE9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EE9

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EE9	#FFFFFF	#000000	##FFFFFF
##665EE9	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077EE

Deuteranopia (green-blind)

#006CE6

Tritanopia (blue-blind)

#1D809B

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #665ee9;
/* rgb */ color: rgb(102, 94, 233);
/* oklch */ color: oklch(56.8% 0.203 280.3);

Tailwind

colors: {
  custom: {
    50: '#9d8cf1',
    500: '#665ee9',
    950: '#000000',
  },
}

SCSS

$custom: #665ee9;
$custom-light: #9d8cf1;
$custom-dark: #000000;

JSON

{
  "hex": "#665ee9",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 233
  },
  "hsl": {
    "h": 243.453,
    "s": 75.956,
    "l": 64.118
  },
  "oklch": {
    "l": 0.56784,
    "c": 0.20306,
    "h": 280.3
  },
  "luminance": 0.16713
}

Semantic roles & 50–950 ramp

primary

#665EE9

secondary

#E7EAB9

accent

#D80DCC

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #665EE9

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

Preview Lab → · Contrast checker → · Palette generator →