#665CB1#665CB1

#665CB1 is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.5% C 0.130 H 286.4°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#665CB1
RGB	rgb(102, 92, 177)
HSL	hsl(247, 35%, 53%)
HSV	hsv(247, 48%, 69%)
CMYK	cmyk(42.4%, 48%, 0%, 30.6%)
CIE-LAB	lab(43.73, 25.57, -44.11)
CIE-LCH	lch(43.73, 50.98, 300.11°)
OKLab	oklab(52.51% 0.0367 -0.1249)
OKLCH	oklch(52.51% 0.13 286.4)
XYZ	xyz(17.2402, 13.6528, 43.3133)
Luminance	0.1365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CB1 #A7B15C

analogous

#5C7CB1 #665CB1 #915CB1

triadic

#665CB1 #B1665C #5CB166

tetradic

#665CB1 #B15C7C #A7B15C #5CB191

square

#665CB1 #B15C7C #A7B15C #5CB191

split-complementary

#665CB1 #B1915C #7CB15C

monochromatic

#362F63 #4C438D #665CB1 #8D85C5 #B4AFD9

Accessibility & contrast

On white

5.63

#665CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#665CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CB1

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CB1	#FFFFFF	#000000	##FFFFFF
##665CB1	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A6AB4

Deuteranopia (green-blind)

#3965AF

Tritanopia (blue-blind)

#506D7E

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #665cb1;
/* rgb */ color: rgb(102, 92, 177);
/* oklch */ color: oklch(52.5% 0.130 286.4);

Tailwind

colors: {
  custom: {
    50: '#968ac9',
    500: '#665cb1',
    950: '#000000',
  },
}

SCSS

$custom: #665cb1;
$custom-light: #968ac9;
$custom-dark: #000000;

JSON

{
  "hex": "#665cb1",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 177
  },
  "hsl": {
    "h": 247.059,
    "s": 35.27,
    "l": 52.745
  },
  "oklch": {
    "l": 0.52512,
    "c": 0.13021,
    "h": 286.4
  },
  "luminance": 0.13653
}

Semantic roles & 50–950 ramp

primary

#665CB1

secondary

#C2C7A2

accent

#CB5CBE

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665CB1

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

Preview Lab → · Contrast checker → · Palette generator →