#665AC9#665AC9

#665AC9 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.7% C 0.166 H 284.2°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#665AC9
RGB	rgb(102, 90, 201)
HSL	hsl(246, 51%, 57%)
HSV	hsv(246, 55%, 79%)
CMYK	cmyk(49.3%, 55.2%, 0%, 21.2%)
CIE-LAB	lab(44.74, 33.99, -56.45)
CIE-LCH	lch(44.74, 65.90, 301.05°)
OKLab	oklab(53.74% 0.0408 -0.1612)
OKLCH	oklch(53.74% 0.166 284.2)
XYZ	xyz(19.6751, 14.3532, 56.9807)
Luminance	0.1435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665AC9 #BDC95A

analogous

#5A86C9 #665AC9 #9D5AC9

triadic

#665AC9 #C9665A #5AC966

tetradic

#665AC9 #C95A86 #BDC95A #5AC99D

square

#665AC9 #C95A86 #BDC95A #5AC99D

split-complementary

#665AC9 #C99D5A #86C95A

monochromatic

#332A7F #4539AD #665AC9 #9188D8 #BCB6E7

Accessibility & contrast

On white

5.43

#665AC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#665AC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665AC9

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665AC9	#FFFFFF	#000000	##FFFFFF
##665AC9	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#166DCD

Deuteranopia (green-blind)

#0C66C7

Tritanopia (blue-blind)

#427389

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665ac9;
/* rgb */ color: rgb(102, 90, 201);
/* oklch */ color: oklch(53.7% 0.166 284.2);

Tailwind

colors: {
  custom: {
    50: '#9889da',
    500: '#665ac9',
    950: '#000000',
  },
}

SCSS

$custom: #665ac9;
$custom-light: #9889da;
$custom-dark: #000000;

JSON

{
  "hex": "#665ac9",
  "rgb": {
    "r": 102,
    "g": 90,
    "b": 201
  },
  "hsl": {
    "h": 246.486,
    "s": 50.685,
    "l": 57.059
  },
  "oklch": {
    "l": 0.53744,
    "c": 0.1663,
    "h": 284.2
  },
  "luminance": 0.14354
}

Semantic roles & 50–950 ramp

primary

#665AC9

secondary

#D1D6A9

accent

#DA4ECB

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #665AC9

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

Preview Lab → · Contrast checker → · Palette generator →