#665BA6#665BA6

#665BA6 is a mid, moderate blue. Relative luminance 0.131; OKLCH L 51.6% C 0.116 H 288.4°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#665BA6
RGB	rgb(102, 91, 166)
HSL	hsl(249, 30%, 50%)
HSV	hsv(249, 45%, 65%)
CMYK	cmyk(38.6%, 45.2%, 0%, 34.9%)
CIE-LAB	lab(42.85, 22.98, -39.02)
CIE-LCH	lch(42.85, 45.29, 300.50°)
OKLab	oklab(51.65% 0.0366 -0.11)
OKLCH	oklch(51.65% 0.116 288.4)
XYZ	xyz(16.1016, 13.0596, 37.7414)
Luminance	0.1306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BA6 #9BA65B

analogous

#5B75A6 #665BA6 #8B5BA6

triadic

#665BA6 #A6665B #5BA666

tetradic

#665BA6 #A65B75 #9BA65B #5BA68B

square

#665BA6 #A65B75 #9BA65B #5BA68B

split-complementary

#665BA6 #A68B5B #75A65B

monochromatic

#352F57 #4D457F #665BA6 #8B83BC #B0AAD1

Accessibility & contrast

On white

5.81

#665BA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#665BA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BA6

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BA6	#FFFFFF	#000000	##FFFFFF
##665BA6	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4167A9

Deuteranopia (green-blind)

#4063A4

Tritanopia (blue-blind)

#556A78

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #665ba6;
/* rgb */ color: rgb(102, 91, 166);
/* oklch */ color: oklch(51.6% 0.116 288.4);

Tailwind

colors: {
  custom: {
    50: '#9589c1',
    500: '#665ba6',
    950: '#000000',
  },
}

SCSS

$custom: #665ba6;
$custom-light: #9589c1;
$custom-dark: #000000;

JSON

{
  "hex": "#665ba6",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 166
  },
  "hsl": {
    "h": 248.8,
    "s": 29.644,
    "l": 50.392
  },
  "oklch": {
    "l": 0.51648,
    "c": 0.11596,
    "h": 288.4
  },
  "luminance": 0.1306
}

Semantic roles & 50–950 ramp

primary

#665BA6

secondary

#BABF9E

accent

#C662B7

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #665BA6

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

Preview Lab → · Contrast checker → · Palette generator →