#665CEF#665CEF

#665CEF is a mid, highly saturated blue. Relative luminance 0.167; OKLCH L 56.9% C 0.213 H 280.2°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#665CEF
RGB	rgb(102, 92, 239)
HSL	hsl(244, 82%, 65%)
HSV	hsv(244, 62%, 94%)
CMYK	cmyk(57.3%, 61.5%, 0%, 6.3%)
CIE-LAB	lab(47.89, 44.46, -72.95)
CIE-LCH	lch(47.89, 85.43, 301.36°)
OKLab	oklab(56.92% 0.0379 -0.2097)
OKLCH	oklch(56.92% 0.213 280.2)
XYZ	xyz(24.8817, 16.7094, 83.5587)
Luminance	0.1671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CEF #E5EF5C

analogous

#5C9BEF #665CEF #B05CEF

triadic

#665CEF #EF665C #5CEF66

tetradic

#665CEF #EF5C9B #E5EF5C #5CEFB0

square

#665CEF #EF5C9B #E5EF5C #5CEFB0

split-complementary

#665CEF #EFB05C #9BEF5C

monochromatic

#1E13BE #3224EA #665CEF #9A94F4 #CFCBFA

Accessibility & contrast

On white

4.84

#665CEF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#665CEF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CEF

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CEF	#FFFFFF	#000000	##FFFFFF
##665CEF	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)

#0077F4

Deuteranopia (green-blind)

#006CEC

Tritanopia (blue-blind)

#0E809D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #665cef;
/* rgb */ color: rgb(102, 92, 239);
/* oklch */ color: oklch(56.9% 0.213 280.2);

Tailwind

colors: {
  custom: {
    50: '#9e8bf5',
    500: '#665cef',
    950: '#000000',
  },
}

SCSS

$custom: #665cef;
$custom-light: #9e8bf5;
$custom-dark: #000000;

JSON

{
  "hex": "#665cef",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 239
  },
  "hsl": {
    "h": 244.082,
    "s": 82.123,
    "l": 64.902
  },
  "oklch": {
    "l": 0.56921,
    "c": 0.21311,
    "h": 280.2
  },
  "luminance": 0.16711
}

Semantic roles & 50–950 ramp

primary

#665CEF

secondary

#E9ECBA

accent

#DF07D0

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C17

muted

#7F7D85

Preview Lab

Preview with #665CEF

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

Preview Lab → · Contrast checker → · Palette generator →