#665EE5#665EE5

#665EE5 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 56.5% C 0.198 H 280.6°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#665EE5
RGB	rgb(102, 94, 229)
HSL	hsl(244, 72%, 63%)
HSV	hsv(244, 59%, 90%)
CMYK	cmyk(55.5%, 59%, 0%, 10.2%)
CIE-LAB	lab(47.61, 40.19, -67.79)
CIE-LCH	lch(47.61, 78.81, 300.67°)
OKLab	oklab(56.48% 0.0365 -0.1945)
OKLCH	oklch(56.48% 0.198 280.6)
XYZ	xyz(23.6206, 16.4858, 76.0509)
Luminance	0.1649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EE5 #DDE55E

analogous

#5E99E5 #665EE5 #AA5EE5

triadic

#665EE5 #E5665E #5EE566

tetradic

#665EE5 #E55E99 #DDE55E #5EE5AA

square

#665EE5 #E55E99 #DDE55E #5EE5AA

split-complementary

#665EE5 #E5AA5E #99E55E

monochromatic

#241CAD #3429DC #665EE5 #9893EE #CAC7F6

Accessibility & contrast

On white

4.89

#665EE5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#665EE5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EE5

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EE5	#FFFFFF	#000000	##FFFFFF
##665EE5	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076E9

Deuteranopia (green-blind)

#006CE2

Tritanopia (blue-blind)

#257E98

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #665ee5;
/* rgb */ color: rgb(102, 94, 229);
/* oklch */ color: oklch(56.5% 0.198 280.6);

Tailwind

colors: {
  custom: {
    50: '#9c8cee',
    500: '#665ee5',
    950: '#000000',
  },
}

SCSS

$custom: #665ee5;
$custom-light: #9c8cee;
$custom-dark: #000000;

JSON

{
  "hex": "#665ee5",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 229
  },
  "hsl": {
    "h": 243.556,
    "s": 72.193,
    "l": 63.333
  },
  "oklch": {
    "l": 0.5648,
    "c": 0.19792,
    "h": 280.6
  },
  "luminance": 0.16487
}

Semantic roles & 50–950 ramp

primary

#665EE5

secondary

#E5E7B7

accent

#D411C9

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #665EE5

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

Preview Lab → · Contrast checker → · Palette generator →