#665AB5#665AB5

#665AB5 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.4% C 0.139 H 286.6°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#665AB5
RGB	rgb(102, 90, 181)
HSL	hsl(248, 38%, 53%)
HSV	hsv(248, 50%, 71%)
CMYK	cmyk(43.6%, 50.3%, 0%, 29%)
CIE-LAB	lab(43.47, 27.98, -46.87)
CIE-LCH	lch(43.47, 54.59, 300.84°)
OKLab	oklab(52.39% 0.0397 -0.133)
OKLCH	oklch(52.39% 0.139 286.6)
XYZ	xyz(17.4738, 13.4726, 45.3869)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665AB5 #A9B55A

analogous

#5A7BB5 #665AB5 #935AB5

triadic

#665AB5 #B5665A #5AB566

tetradic

#665AB5 #B55A7B #A9B55A #5AB593

square

#665AB5 #B55A7B #A9B55A #5AB593

split-complementary

#665AB5 #B5935A #7BB55A

monochromatic

#352E67 #4B4191 #665AB5 #8D84C8 #B4AFDB

Accessibility & contrast

On white

5.68

#665AB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#665AB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665AB5

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665AB5	#FFFFFF	#000000	##FFFFFF
##665AB5	1.00	5.68	3.69	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3369B8

Deuteranopia (green-blind)

#3264B3

Tritanopia (blue-blind)

#4E6D7F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #665ab5;
/* rgb */ color: rgb(102, 90, 181);
/* oklch */ color: oklch(52.4% 0.139 286.6);

Tailwind

colors: {
  custom: {
    50: '#9689cc',
    500: '#665ab5',
    950: '#000000',
  },
}

SCSS

$custom: #665ab5;
$custom-light: #9689cc;
$custom-dark: #000000;

JSON

{
  "hex": "#665ab5",
  "rgb": {
    "r": 102,
    "g": 90,
    "b": 181
  },
  "hsl": {
    "h": 247.912,
    "s": 38.075,
    "l": 53.137
  },
  "oklch": {
    "l": 0.52391,
    "c": 0.13884,
    "h": 286.6
  },
  "luminance": 0.13473
}

Semantic roles & 50–950 ramp

primary

#665AB5

secondary

#C4C9A2

accent

#CE5ABF

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665AB5

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

Preview Lab → · Contrast checker → · Palette generator →