#665BCA#665BCA

#665BCA is a mid, vivid blue. Relative luminance 0.146; OKLCH L 54.0% C 0.166 H 283.8°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#665BCA
RGB	rgb(102, 91, 202)
HSL	hsl(246, 51%, 57%)
HSV	hsv(246, 55%, 79%)
CMYK	cmyk(49.5%, 55%, 0%, 20.8%)
CIE-LAB	lab(45.04, 33.69, -56.54)
CIE-LCH	lch(45.04, 65.81, 300.79°)
OKLab	oklab(53.99% 0.0397 -0.1614)
OKLCH	oklch(53.99% 0.166 283.8)
XYZ	xyz(19.8781, 14.5702, 57.6306)
Luminance	0.1457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BCA #BFCA5B

analogous

#5B87CA #665BCA #9E5BCA

triadic

#665BCA #CA665B #5BCA66

tetradic

#665BCA #CA5B87 #BFCA5B #5BCA9E

square

#665BCA #CA5B87 #BFCA5B #5BCA9E

split-complementary

#665BCA #CA9E5B #87CA5B

monochromatic

#322A81 #4439AF #665BCA #9189D9 #BCB8E8

Accessibility & contrast

On white

5.37

#665BCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#665BCA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BCA

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BCA	#FFFFFF	#000000	##FFFFFF
##665BCA	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#186ECE

Deuteranopia (green-blind)

#0D67C8

Tritanopia (blue-blind)

#41748A

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #665bca;
/* rgb */ color: rgb(102, 91, 202);
/* oklch */ color: oklch(54.0% 0.166 283.8);

Tailwind

colors: {
  custom: {
    50: '#9989db',
    500: '#665bca',
    950: '#000000',
  },
}

SCSS

$custom: #665bca;
$custom-light: #9989db;
$custom-dark: #000000;

JSON

{
  "hex": "#665bca",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 202
  },
  "hsl": {
    "h": 245.946,
    "s": 51.152,
    "l": 57.451
  },
  "oklch": {
    "l": 0.53991,
    "c": 0.16626,
    "h": 283.8
  },
  "luminance": 0.14571
}

Semantic roles & 50–950 ramp

primary

#665BCA

secondary

#D2D7AA

accent

#DB4DCD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #665BCA

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

Preview Lab → · Contrast checker → · Palette generator →