#665BC9#665BC9

#665BC9 is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.9% C 0.165 H 283.9°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#665BC9
RGB	rgb(102, 91, 201)
HSL	hsl(246, 50%, 57%)
HSV	hsv(246, 55%, 79%)
CMYK	cmyk(49.3%, 54.7%, 0%, 21.2%)
CIE-LAB	lab(44.97, 33.38, -56.07)
CIE-LCH	lch(44.97, 65.26, 300.77°)
OKLab	oklab(53.92% 0.0397 -0.1601)
OKLCH	oklch(53.92% 0.165 283.9)
XYZ	xyz(19.7600, 14.5230, 57.0090)
Luminance	0.1452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BC9 #BEC95B

analogous

#5B87C9 #665BC9 #9D5BC9

triadic

#665BC9 #C9665B #5BC966

tetradic

#665BC9 #C95B87 #BEC95B #5BC99D

square

#665BC9 #C95B87 #BEC95B #5BC99D

split-complementary

#665BC9 #C99D5B #87C95B

monochromatic

#332A80 #4539AE #665BC9 #9189D8 #BCB7E7

Accessibility & contrast

On white

5.38

#665BC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#665BC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BC9

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BC9	#FFFFFF	#000000	##FFFFFF
##665BC9	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B6ECD

Deuteranopia (green-blind)

#1167C7

Tritanopia (blue-blind)

#427489

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665bc9;
/* rgb */ color: rgb(102, 91, 201);
/* oklch */ color: oklch(53.9% 0.165 283.9);

Tailwind

colors: {
  custom: {
    50: '#9889da',
    500: '#665bc9',
    950: '#000000',
  },
}

SCSS

$custom: #665bc9;
$custom-light: #9889da;
$custom-dark: #000000;

JSON

{
  "hex": "#665bc9",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 201
  },
  "hsl": {
    "h": 246,
    "s": 50.459,
    "l": 57.255
  },
  "oklch": {
    "l": 0.53921,
    "c": 0.16491,
    "h": 283.9
  },
  "luminance": 0.14524
}

Semantic roles & 50–950 ramp

primary

#665BC9

secondary

#D2D6AA

accent

#DA4ECC

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #665BC9

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

Preview Lab → · Contrast checker → · Palette generator →