#665CCB#665CCB

#665CCB is a mid, vivid blue. Relative luminance 0.148; OKLCH L 54.2% C 0.166 H 283.4°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#665CCB
RGB	rgb(102, 92, 203)
HSL	hsl(245, 52%, 58%)
HSV	hsv(245, 55%, 80%)
CMYK	cmyk(49.8%, 54.7%, 0%, 20.4%)
CIE-LAB	lab(45.34, 33.39, -56.62)
CIE-LCH	lch(45.34, 65.73, 300.53°)
OKLab	oklab(54.24% 0.0386 -0.1617)
OKLCH	oklch(54.24% 0.166 283.4)
XYZ	xyz(20.0829, 14.7898, 58.2848)
Luminance	0.1479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CCB #C1CB5C

analogous

#5C8ACB #665CCB #9D5CCB

triadic

#665CCB #CB665C #5CCB66

tetradic

#665CCB #CB5C8A #C1CB5C #5CCB9D

square

#665CCB #CB5C8A #C1CB5C #5CCB9D

split-complementary

#665CCB #CB9D5C #8ACB5C

monochromatic

#322A83 #4339B1 #665CCB #928ADA #BDB9E9

Accessibility & contrast

On white

5.31

#665CCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#665CCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CCB

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CCB	#FFFFFF	#000000	##FFFFFF
##665CCB	1.00	5.31	3.96	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A6FCF

Deuteranopia (green-blind)

#0F68C9

Tritanopia (blue-blind)

#40758A

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #665ccb;
/* rgb */ color: rgb(102, 92, 203);
/* oklch */ color: oklch(54.2% 0.166 283.4);

Tailwind

colors: {
  custom: {
    50: '#998adb',
    500: '#665ccb',
    950: '#000000',
  },
}

SCSS

$custom: #665ccb;
$custom-light: #998adb;
$custom-dark: #000000;

JSON

{
  "hex": "#665ccb",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 203
  },
  "hsl": {
    "h": 245.405,
    "s": 51.628,
    "l": 57.843
  },
  "oklch": {
    "l": 0.54239,
    "c": 0.16624,
    "h": 283.4
  },
  "luminance": 0.14791
}

Semantic roles & 50–950 ramp

primary

#665CCB

secondary

#D4D8AB

accent

#DB4DCE

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #665CCB

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

Preview Lab → · Contrast checker → · Palette generator →