#665CB3#665CB3

#665CB3 is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.6% C 0.133 H 286.1°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#665CB3
RGB	rgb(102, 92, 179)
HSL	hsl(247, 36%, 53%)
HSV	hsv(247, 49%, 70%)
CMYK	cmyk(43%, 48.6%, 0%, 29.8%)
CIE-LAB	lab(43.85, 26.16, -45.09)
CIE-LCH	lch(43.85, 52.13, 300.12°)
OKLab	oklab(52.64% 0.037 -0.1278)
OKLCH	oklch(52.64% 0.133 286.1)
XYZ	xyz(17.4410, 13.7331, 44.3709)
Luminance	0.1373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CB3 #A9B35C

analogous

#5C7DB3 #665CB3 #925CB3

triadic

#665CB3 #B3665C #5CB366

tetradic

#665CB3 #B35C7D #A9B35C #5CB392

square

#665CB3 #B35C7D #A9B35C #5CB392

split-complementary

#665CB3 #B3925C #7DB35C

monochromatic

#352F65 #4B438F #665CB3 #8D86C6 #B4AFDA

Accessibility & contrast

On white

5.60

#665CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#665CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CB3

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CB3	#FFFFFF	#000000	##FFFFFF
##665CB3	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396AB6

Deuteranopia (green-blind)

#3765B1

Tritanopia (blue-blind)

#4F6E7F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665cb3;
/* rgb */ color: rgb(102, 92, 179);
/* oklch */ color: oklch(52.6% 0.133 286.1);

Tailwind

colors: {
  custom: {
    50: '#968aca',
    500: '#665cb3',
    950: '#000000',
  },
}

SCSS

$custom: #665cb3;
$custom-light: #968aca;
$custom-dark: #000000;

JSON

{
  "hex": "#665cb3",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 179
  },
  "hsl": {
    "h": 246.897,
    "s": 36.402,
    "l": 53.137
  },
  "oklch": {
    "l": 0.52638,
    "c": 0.13306,
    "h": 286.1
  },
  "luminance": 0.13734
}

Semantic roles & 50–950 ramp

primary

#665CB3

secondary

#C4C8A3

accent

#CC5BBF

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665CB3

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

Preview Lab → · Contrast checker → · Palette generator →