#665BF5#665BF5

#665BF5 is a mid, highly saturated blue. Relative luminance 0.169; OKLCH L 57.2% C 0.222 H 280.0°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX#665BF5
RGBrgb(102, 91, 245)
HSLhsl(244, 89%, 66%)
HSVhsv(244, 63%, 96%)
CMYKcmyk(58.4%, 62.9%, 0%, 3.9%)
CIE-LABlab(48.13, 46.88, -75.92)
CIE-LCHlch(48.13, 89.23, 301.70°)
OKLaboklab(57.24% 0.0384 -0.2184)
OKLCHoklch(57.24% 0.222 280)
XYZxyz(25.6968, 16.8977, 88.2760)
Luminance0.1690 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#665BF5 #EAF55B
analogous
#5B9DF5 #665BF5 #B35BF5
triadic
#665BF5 #F5665B #5BF566
tetradic
#665BF5 #F55B9D #EAF55B #5BF5B3
square
#665BF5 #F55B9D #EAF55B #5BF5B3
split-complementary
#665BF5 #F5B35B #9DF55B
monochromatic
#1A0CC9 #3021F1 #665BF5 #9C95F9 #D2CEFC

Accessibility & contrast

On white

4.79
#665BF5 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.38
#665BF5 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BF5
4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##665BF5#FFFFFF#000000##FFFFFF
##665BF51.004.794.384.79
#FFFFFF4.791.0021.001.00
#0000004.3821.001.0021.00
##FFFFFF4.791.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0078FA
Deuteranopia (green-blind)
#006CF2
Tritanopia (blue-blind)
#0082A0
Achromatopsia (no color)
#727272

Design tokens & code

CSS
--color: #665bf5;
/* rgb */ color: rgb(102, 91, 245);
/* oklch */ color: oklch(57.2% 0.222 280.0);
Tailwind
colors: {
  custom: {
    50: '#9f8afa',
    500: '#665bf5',
    950: '#000000',
  },
}
SCSS
$custom: #665bf5;
$custom-light: #9f8afa;
$custom-dark: #000000;
JSON
{
  "hex": "#665bf5",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 245
  },
  "hsl": {
    "h": 244.286,
    "s": 88.506,
    "l": 65.882
  },
  "oklch": {
    "l": 0.57239,
    "c": 0.22178,
    "h": 280
  },
  "luminance": 0.169
}

Semantic roles & 50–950 ramp

primary
#665BF5
secondary
#ECEFBC
accent
#E500D5
background
#FAF8FF
surface
#F4F0FF
border
#CECBD7
text
#100C17
muted
#7F7D85

Preview Lab

Preview with #665BF5

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

Preview Lab → · Contrast checker → · Palette generator →

#665BF5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva