#665EB8#665EB8

#665EB8 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.3% C 0.137 H 284.8°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#665EB8
RGB	rgb(102, 94, 184)
HSL	hsl(245, 39%, 55%)
HSV	hsv(245, 49%, 72%)
CMYK	cmyk(44.6%, 48.9%, 0%, 27.8%)
CIE-LAB	lab(44.65, 26.42, -46.74)
CIE-LCH	lch(44.65, 53.69, 299.48°)
OKLab	oklab(53.33% 0.035 -0.1326)
OKLCH	oklch(53.33% 0.137 284.8)
XYZ	xyz(18.1314, 14.2901, 47.1410)
Luminance	0.1429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EB8 #B0B85E

analogous

#5E83B8 #665EB8 #935EB8

triadic

#665EB8 #B8665E #5EB866

tetradic

#665EB8 #B85E83 #B0B85E #5EB893

square

#665EB8 #B85E83 #B0B85E #5EB893

split-complementary

#665EB8 #B8935E #83B85E

monochromatic

#35306C #4A4296 #665EB8 #8E88CB #B7B3DD

Accessibility & contrast

On white

5.44

#665EB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#665EB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EB8

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EB8	#FFFFFF	#000000	##FFFFFF
##665EB8	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386CBB

Deuteranopia (green-blind)

#3567B6

Tritanopia (blue-blind)

#4C7182

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665eb8;
/* rgb */ color: rgb(102, 94, 184);
/* oklch */ color: oklch(53.3% 0.137 284.8);

Tailwind

colors: {
  custom: {
    50: '#968bce',
    500: '#665eb8',
    950: '#000000',
  },
}

SCSS

$custom: #665eb8;
$custom-light: #968bce;
$custom-dark: #000000;

JSON

{
  "hex": "#665eb8",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 184
  },
  "hsl": {
    "h": 245.333,
    "s": 38.793,
    "l": 54.51
  },
  "oklch": {
    "l": 0.53334,
    "c": 0.13717,
    "h": 284.8
  },
  "luminance": 0.14291
}

Semantic roles & 50–950 ramp

primary

#665EB8

secondary

#C9CCA6

accent

#CF59C4

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #665EB8

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

Preview Lab → · Contrast checker → · Palette generator →