#665EF0#665EF0

#665EF0 is a mid, highly saturated blue. Relative luminance 0.171; OKLCH L 57.3% C 0.212 H 279.8°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX#665EF0
RGBrgb(102, 94, 240)
HSLhsl(243, 83%, 65%)
HSVhsv(243, 61%, 94%)
CMYKcmyk(57.5%, 60.8%, 0%, 5.9%)
CIE-LABlab(48.41, 43.60, -72.67)
CIE-LCHlch(48.41, 84.74, 300.97°)
OKLaboklab(57.33% 0.0361 -0.2089)
OKLCHoklch(57.33% 0.212 279.8)
XYZxyz(25.2054, 17.1197, 84.3974)
Luminance0.1712 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#665EF0 #E8F05E
analogous
#5E9FF0 #665EF0 #AF5EF0
triadic
#665EF0 #F0665E #5EF066
tetradic
#665EF0 #F05E9F #E8F05E #5EF0AF
square
#665EF0 #F05E9F #E8F05E #5EF0AF
split-complementary
#665EF0 #F0AF5E #9FF05E
monochromatic
#1C12C2 #3126EB #665EF0 #9B96F5 #D0CEFA

Accessibility & contrast

On white

4.75
#665EF0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.42
#665EF0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EF0
4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##665EF0#FFFFFF#000000##FFFFFF
##665EF01.004.754.424.75
#FFFFFF4.751.0021.001.00
#0000004.4221.001.0021.00
##FFFFFF4.751.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0079F5
Deuteranopia (green-blind)
#006DED
Tritanopia (blue-blind)
#08829E
Achromatopsia (no color)
#737373

Design tokens & code

CSS
--color: #665ef0;
/* rgb */ color: rgb(102, 94, 240);
/* oklch */ color: oklch(57.3% 0.212 279.8);
Tailwind
colors: {
  custom: {
    50: '#9e8cf6',
    500: '#665ef0',
    950: '#000000',
  },
}
SCSS
$custom: #665ef0;
$custom-light: #9e8cf6;
$custom-dark: #000000;
JSON
{
  "hex": "#665ef0",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 240
  },
  "hsl": {
    "h": 243.288,
    "s": 82.955,
    "l": 65.49
  },
  "oklch": {
    "l": 0.57325,
    "c": 0.21195,
    "h": 279.8
  },
  "luminance": 0.17121
}

Semantic roles & 50–950 ramp

primary
#665EF0
secondary
#EBEDBC
accent
#DF06D3
background
#FAF8FF
surface
#F4F0FF
border
#CECBD7
text
#100C17
muted
#7F7D85

Preview Lab

Preview with #665EF0

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

Preview Lab → · Contrast checker → · Palette generator →

#665EF0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva