#665BC8#665BC8

#665BC8 is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.9% C 0.164 H 284.0°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#665BC8
RGB	rgb(102, 91, 200)
HSL	hsl(246, 50%, 57%)
HSV	hsv(246, 55%, 78%)
CMYK	cmyk(49%, 54.5%, 0%, 21.6%)
CIE-LAB	lab(44.91, 33.08, -55.60)
CIE-LCH	lch(44.91, 64.70, 300.75°)
OKLab	oklab(53.85% 0.0397 -0.1587)
OKLCH	oklch(53.85% 0.164 284)
XYZ	xyz(19.6428, 14.4761, 56.3915)
Luminance	0.1448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BC8 #BDC85B

analogous

#5B87C8 #665BC8 #9D5BC8

triadic

#665BC8 #C8665B #5BC866

tetradic

#665BC8 #C85B87 #BDC85B #5BC89D

square

#665BC8 #C85B87 #BDC85B #5BC89D

split-complementary

#665BC8 #C89D5B #87C85B

monochromatic

#332A7E #453AAC #665BC8 #9189D7 #BCB7E7

Accessibility & contrast

On white

5.39

#665BC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#665BC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BC8

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BC8	#FFFFFF	#000000	##FFFFFF
##665BC8	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D6ECC

Deuteranopia (green-blind)

#1467C6

Tritanopia (blue-blind)

#437389

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665bc8;
/* rgb */ color: rgb(102, 91, 200);
/* oklch */ color: oklch(53.9% 0.164 284.0);

Tailwind

colors: {
  custom: {
    50: '#9889d9',
    500: '#665bc8',
    950: '#000000',
  },
}

SCSS

$custom: #665bc8;
$custom-light: #9889d9;
$custom-dark: #000000;

JSON

{
  "hex": "#665bc8",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 200
  },
  "hsl": {
    "h": 246.055,
    "s": 49.772,
    "l": 57.059
  },
  "oklch": {
    "l": 0.53851,
    "c": 0.16357,
    "h": 284
  },
  "luminance": 0.14477
}

Semantic roles & 50–950 ramp

primary

#665BC8

secondary

#D1D6A9

accent

#D94FCB

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #665BC8

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

Preview Lab → · Contrast checker → · Palette generator →