#665BCB#665BCB

#665BCB is a mid, vivid blue. Relative luminance 0.146; OKLCH L 54.1% C 0.168 H 283.7°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#665BCB
RGB	rgb(102, 91, 203)
HSL	hsl(246, 52%, 58%)
HSV	hsv(246, 55%, 80%)
CMYK	cmyk(49.8%, 55.2%, 0%, 20.4%)
CIE-LAB	lab(45.11, 33.99, -57.01)
CIE-LCH	lch(45.11, 66.37, 300.81°)
OKLab	oklab(54.06% 0.0397 -0.1628)
OKLCH	oklch(54.06% 0.168 283.7)
XYZ	xyz(19.9968, 14.6177, 58.2562)
Luminance	0.1462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BCB #C0CB5B

analogous

#5B88CB #665BCB #9E5BCB

triadic

#665BCB #CB665B #5BCB66

tetradic

#665BCB #CB5B88 #C0CB5B #5BCB9E

square

#665BCB #CB5B88 #C0CB5B #5BCB9E

split-complementary

#665BCB #CB9E5B #88CB5B

monochromatic

#322982 #4438B1 #665BCB #9189DA #BDB8E8

Accessibility & contrast

On white

5.35

#665BCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#665BCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BCB

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BCB	#FFFFFF	#000000	##FFFFFF
##665BCB	1.00	5.35	3.92	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#166ECF

Deuteranopia (green-blind)

#0967C9

Tritanopia (blue-blind)

#40748A

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #665bcb;
/* rgb */ color: rgb(102, 91, 203);
/* oklch */ color: oklch(54.1% 0.168 283.7);

Tailwind

colors: {
  custom: {
    50: '#9989db',
    500: '#665bcb',
    950: '#000000',
  },
}

SCSS

$custom: #665bcb;
$custom-light: #9989db;
$custom-dark: #000000;

JSON

{
  "hex": "#665bcb",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 203
  },
  "hsl": {
    "h": 245.893,
    "s": 51.852,
    "l": 57.647
  },
  "oklch": {
    "l": 0.54062,
    "c": 0.16761,
    "h": 283.7
  },
  "luminance": 0.14619
}

Semantic roles & 50–950 ramp

primary

#665BCB

secondary

#D3D7AA

accent

#DB4CCD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #665BCB

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

Preview Lab → · Contrast checker → · Palette generator →