#665BCE#665BCE

#665BCE is a mid, vivid blue. Relative luminance 0.148; OKLCH L 54.3% C 0.172 H 283.4°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#665BCE
RGB	rgb(102, 91, 206)
HSL	hsl(246, 54%, 58%)
HSV	hsv(246, 56%, 81%)
CMYK	cmyk(50.5%, 55.8%, 0%, 19.2%)
CIE-LAB	lab(45.31, 34.91, -58.41)
CIE-LCH	lch(45.31, 68.05, 300.86°)
OKLab	oklab(54.27% 0.0398 -0.1669)
OKLCH	oklch(54.27% 0.172 283.4)
XYZ	xyz(20.3578, 14.7621, 60.1572)
Luminance	0.1476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BCE #C3CE5B

analogous

#5B89CE #665BCE #9F5BCE

triadic

#665BCE #CE665B #5BCE66

tetradic

#665BCE #CE5B89 #C3CE5B #5BCE9F

square

#665BCE #CE5B89 #C3CE5B #5BCE9F

split-complementary

#665BCE #CE9F5B #89CE5B

monochromatic

#312886 #4236B6 #665BCE #928ADC #BEB9EA

Accessibility & contrast

On white

5.31

#665BCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#665BCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BCE

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BCE	#FFFFFF	#000000	##FFFFFF
##665BCE	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D6FD2

Deuteranopia (green-blind)

#0067CC

Tritanopia (blue-blind)

#3E758C

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #665bce;
/* rgb */ color: rgb(102, 91, 206);
/* oklch */ color: oklch(54.3% 0.172 283.4);

Tailwind

colors: {
  custom: {
    50: '#998ade',
    500: '#665bce',
    950: '#000000',
  },
}

SCSS

$custom: #665bce;
$custom-light: #998ade;
$custom-dark: #000000;

JSON

{
  "hex": "#665bce",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 206
  },
  "hsl": {
    "h": 245.739,
    "s": 53.991,
    "l": 58.235
  },
  "oklch": {
    "l": 0.54274,
    "c": 0.17163,
    "h": 283.4
  },
  "luminance": 0.14763
}

Semantic roles & 50–950 ramp

primary

#665BCE

secondary

#D5D9AB

accent

#DD4ACF

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #665BCE

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

Preview Lab → · Contrast checker → · Palette generator →