#665EB5#665EB5

#665EB5 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.1% C 0.133 H 285.1°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#665EB5
RGB	rgb(102, 94, 181)
HSL	hsl(246, 37%, 54%)
HSV	hsv(246, 48%, 71%)
CMYK	cmyk(43.6%, 48.1%, 0%, 29%)
CIE-LAB	lab(44.47, 25.53, -45.27)
CIE-LCH	lch(44.47, 51.97, 299.42°)
OKLab	oklab(53.14% 0.0347 -0.1283)
OKLCH	oklch(53.14% 0.133 285.1)
XYZ	xyz(17.8203, 14.1657, 45.5024)
Luminance	0.1417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665EB5 #ADB55E

analogous

#5E82B5 #665EB5 #925EB5

triadic

#665EB5 #B5665E #5EB566

tetradic

#665EB5 #B55E82 #ADB55E #5EB592

square

#665EB5 #B55E82 #ADB55E #5EB592

split-complementary

#665EB5 #B5925E #82B55E

monochromatic

#353069 #4B4392 #665EB5 #8E88C8 #B6B2DC

Accessibility & contrast

On white

5.48

#665EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#665EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665EB5

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665EB5	#FFFFFF	#000000	##FFFFFF
##665EB5	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6CB8

Deuteranopia (green-blind)

#3867B3

Tritanopia (blue-blind)

#4E7081

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #665eb5;
/* rgb */ color: rgb(102, 94, 181);
/* oklch */ color: oklch(53.1% 0.133 285.1);

Tailwind

colors: {
  custom: {
    50: '#968bcc',
    500: '#665eb5',
    950: '#000000',
  },
}

SCSS

$custom: #665eb5;
$custom-light: #968bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#665eb5",
  "rgb": {
    "r": 102,
    "g": 94,
    "b": 181
  },
  "hsl": {
    "h": 245.517,
    "s": 37.021,
    "l": 53.922
  },
  "oklch": {
    "l": 0.53144,
    "c": 0.13293,
    "h": 285.1
  },
  "luminance": 0.14166
}

Semantic roles & 50–950 ramp

primary

#665EB5

secondary

#C7CAA5

accent

#CD5BC3

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #665EB5

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

Preview Lab → · Contrast checker → · Palette generator →