#665EB9#665EB9

#665EB9 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.4% C 0.139 H 284.7°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#665EB9
RGB	rgb(102, 94, 185)
HSL	hsl(245, 39%, 55%)
HSV	hsv(245, 49%, 73%)
CMYK	cmyk(44.9%, 49.2%, 0%, 27.5%)
CIE-LAB	lab(44.71, 26.72, -47.23)
CIE-LCH	lch(44.71, 54.26, 299.50°)
OKLab	oklab(53.4% 0.0351 -0.1341)
OKLCH	oklch(53.4% 0.139 284.7)
XYZ	xyz(18.2366, 14.3322, 47.6950)
Luminance	0.1433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EB9 #B1B95E

analogous

#5E83B9 #665EB9 #945EB9

triadic

#665EB9 #B9665E #5EB966

tetradic

#665EB9 #B95E83 #B1B95E #5EB994

square

#665EB9 #B95E83 #B1B95E #5EB994

split-complementary

#665EB9 #B9945E #83B95E

monochromatic

#352F6D #4A4298 #665EB9 #8F89CC #B7B3DE

Accessibility & contrast

On white

5.43

#665EB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#665EB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EB9

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EB9	#FFFFFF	#000000	##FFFFFF
##665EB9	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)

#376CBC

Deuteranopia (green-blind)

#3467B7

Tritanopia (blue-blind)

#4C7183

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #665eb9;
/* rgb */ color: rgb(102, 94, 185);
/* oklch */ color: oklch(53.4% 0.139 284.7);

Tailwind

colors: {
  custom: {
    50: '#968bce',
    500: '#665eb9',
    950: '#000000',
  },
}

SCSS

$custom: #665eb9;
$custom-light: #968bce;
$custom-dark: #000000;

JSON

{
  "hex": "#665eb9",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 185
  },
  "hsl": {
    "h": 245.275,
    "s": 39.394,
    "l": 54.706
  },
  "oklch": {
    "l": 0.53398,
    "c": 0.13859,
    "h": 284.7
  },
  "luminance": 0.14333
}

Semantic roles & 50–950 ramp

primary

#665EB9

secondary

#C9CDA6

accent

#CF59C5

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #665EB9

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

Preview Lab → · Contrast checker → · Palette generator →