#665EEF#665EEF

#665EEF is a mid, highly saturated blue. Relative luminance 0.171; OKLCH L 57.2% C 0.211 H 279.9°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#665EEF
RGB	rgb(102, 94, 239)
HSL	hsl(243, 82%, 65%)
HSV	hsv(243, 61%, 94%)
CMYK	cmyk(57.3%, 60.7%, 0%, 6.3%)
CIE-LAB	lab(48.34, 43.29, -72.23)
CIE-LCH	lch(48.34, 84.21, 300.94°)
OKLab	oklab(57.25% 0.0361 -0.2076)
OKLCH	oklch(57.25% 0.211 279.9)
XYZ	xyz(25.0573, 17.0605, 83.6172)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EEF #E7EF5E

analogous

#5E9FEF #665EEF #AE5EEF

triadic

#665EEF #EF665E #5EEF66

tetradic

#665EEF #EF5E9F #E7EF5E #5EEFAE

square

#665EEF #EF5E9F #E7EF5E #5EEFAE

split-complementary

#665EEF #EFAE5E #9FEF5E

monochromatic

#1D13C0 #3126E9 #665EEF #9B96F5 #D0CDFA

Accessibility & contrast

On white

4.76

#665EEF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#665EEF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EEF

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EEF	#FFFFFF	#000000	##FFFFFF
##665EEF	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0078F4

Deuteranopia (green-blind)

#006DEC

Tritanopia (blue-blind)

#0D819E

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #665eef;
/* rgb */ color: rgb(102, 94, 239);
/* oklch */ color: oklch(57.2% 0.211 279.9);

Tailwind

colors: {
  custom: {
    50: '#9e8cf5',
    500: '#665eef',
    950: '#000000',
  },
}

SCSS

$custom: #665eef;
$custom-light: #9e8cf5;
$custom-dark: #000000;

JSON

{
  "hex": "#665eef",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 239
  },
  "hsl": {
    "h": 243.31,
    "s": 81.921,
    "l": 65.294
  },
  "oklch": {
    "l": 0.57247,
    "c": 0.21069,
    "h": 279.9
  },
  "luminance": 0.17062
}

Semantic roles & 50–950 ramp

primary

#665EEF

secondary

#EAEDBC

accent

#DE07D2

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665EEF

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

Preview Lab → · Contrast checker → · Palette generator →