#665FB3#665FB3

#665FB3 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.2% C 0.129 H 284.9°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#665FB3
RGB	rgb(102, 95, 179)
HSL	hsl(245, 36%, 54%)
HSV	hsv(245, 47%, 70%)
CMYK	cmyk(43%, 46.9%, 0%, 29.8%)
CIE-LAB	lab(44.61, 24.32, -43.88)
CIE-LCH	lch(44.61, 50.17, 299.00°)
OKLab	oklab(53.21% 0.0331 -0.1242)
OKLCH	oklch(53.21% 0.129 284.9)
XYZ	xyz(17.7060, 14.2632, 44.4592)
Luminance	0.1426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665FB3 #ACB35F

analogous

#5F82B3 #665FB3 #905FB3

triadic

#665FB3 #B3665F #5FB366

tetradic

#665FB3 #B35F82 #ACB35F #5FB390

square

#665FB3 #B35F82 #ACB35F #5FB390

split-complementary

#665FB3 #B3905F #82B35F

monochromatic

#353167 #4B4590 #665FB3 #8E88C7 #B5B2DA

Accessibility & contrast

On white

5.45

#665FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#665FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665FB3

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665FB3	#FFFFFF	#000000	##FFFFFF
##665FB3	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E6CB6

Deuteranopia (green-blind)

#3C67B1

Tritanopia (blue-blind)

#4F7080

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #665fb3;
/* rgb */ color: rgb(102, 95, 179);
/* oklch */ color: oklch(53.2% 0.129 284.9);

Tailwind

colors: {
  custom: {
    50: '#968cca',
    500: '#665fb3',
    950: '#000000',
  },
}

SCSS

$custom: #665fb3;
$custom-light: #968cca;
$custom-dark: #000000;

JSON

{
  "hex": "#665fb3",
  "rgb": {
    "r": 102,
    "g": 95,
    "b": 179
  },
  "hsl": {
    "h": 245,
    "s": 35.593,
    "l": 53.725
  },
  "oklch": {
    "l": 0.53211,
    "c": 0.12859,
    "h": 284.9
  },
  "luminance": 0.14264
}

Semantic roles & 50–950 ramp

primary

#665FB3

secondary

#C6C9A5

accent

#CC5CC2

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #665FB3

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

Preview Lab → · Contrast checker → · Palette generator →