#665CCF#665CCF

#665CCF is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.5% C 0.172 H 283.0°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#665CCF
RGB	rgb(102, 92, 207)
HSL	hsl(245, 55%, 59%)
HSV	hsv(245, 56%, 81%)
CMYK	cmyk(50.7%, 55.6%, 0%, 18.8%)
CIE-LAB	lab(45.61, 34.61, -58.49)
CIE-LCH	lch(45.61, 67.97, 300.61°)
OKLab	oklab(54.52% 0.0387 -0.1672)
OKLCH	oklch(54.52% 0.172 283)
XYZ	xyz(20.5657, 14.9830, 60.8277)
Luminance	0.1498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CCF #C5CF5C

analogous

#5C8BCF #665CCF #9F5CCF

triadic

#665CCF #CF665C #5CCF66

tetradic

#665CCF #CF5C8B #C5CF5C #5CCF9F

square

#665CCF #CF5C8B #C5CF5C #5CCF9F

split-complementary

#665CCF #CF9F5C #8BCF5C

monochromatic

#312888 #4136B8 #665CCF #928BDD #BFBBEB

Accessibility & contrast

On white

5.25

#665CCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#665CCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CCF

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CCF	#FFFFFF	#000000	##FFFFFF
##665CCF	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1070D3

Deuteranopia (green-blind)

#0068CD

Tritanopia (blue-blind)

#3D768C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #665ccf;
/* rgb */ color: rgb(102, 92, 207);
/* oklch */ color: oklch(54.5% 0.172 283.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#665ccf",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 207
  },
  "hsl": {
    "h": 245.217,
    "s": 54.502,
    "l": 58.627
  },
  "oklch": {
    "l": 0.54521,
    "c": 0.17161,
    "h": 283
  },
  "luminance": 0.14984
}

Semantic roles & 50–950 ramp

primary

#665CCF

secondary

#D6DAAD

accent

#DE4AD1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0C15

muted

#7E7D83

Preview Lab

Preview with #665CCF

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

Preview Lab → · Contrast checker → · Palette generator →