#665CBB#665CBB

#665CBB is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.2% C 0.144 H 285.2°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#665CBB
RGB	rgb(102, 92, 187)
HSL	hsl(246, 41%, 55%)
HSV	hsv(246, 51%, 73%)
CMYK	cmyk(45.5%, 50.8%, 0%, 26.7%)
CIE-LAB	lab(44.33, 28.55, -49.00)
CIE-LCH	lch(44.33, 56.71, 300.23°)
OKLab	oklab(53.15% 0.0377 -0.1393)
OKLCH	oklch(53.15% 0.144 285.2)
XYZ	xyz(18.2737, 14.0661, 48.7563)
Luminance	0.1407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CBB #B1BB5C

analogous

#5C81BB #665CBB #965CBB

triadic

#665CBB #BB665C #5CBB66

tetradic

#665CBB #BB5C81 #B1BB5C #5CBB96

square

#665CBB #BB5C81 #B1BB5C #5CBB96

split-complementary

#665CBB #BB965C #81BB5C

monochromatic

#352E6F #4A409A #665CBB #8F87CD #B7B2DF

Accessibility & contrast

On white

5.51

#665CBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#665CBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CBB

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CBB	#FFFFFF	#000000	##FFFFFF
##665CBB	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316CBE

Deuteranopia (green-blind)

#2E66B9

Tritanopia (blue-blind)

#4B7083

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #665cbb;
/* rgb */ color: rgb(102, 92, 187);
/* oklch */ color: oklch(53.2% 0.144 285.2);

Tailwind

colors: {
  custom: {
    50: '#978ad0',
    500: '#665cbb',
    950: '#000000',
  },
}

SCSS

$custom: #665cbb;
$custom-light: #978ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#665cbb",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 187
  },
  "hsl": {
    "h": 246.316,
    "s": 41.126,
    "l": 54.706
  },
  "oklch": {
    "l": 0.53154,
    "c": 0.14429,
    "h": 285.2
  },
  "luminance": 0.14067
}

Semantic roles & 50–950 ramp

primary

#665CBB

secondary

#C9CDA5

accent

#D157C4

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #665CBB

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

Preview Lab → · Contrast checker → · Palette generator →