#665BB6#665BB6

#665BB6 is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.6% C 0.139 H 286.1°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#665BB6
RGB	rgb(102, 91, 182)
HSL	hsl(247, 38%, 54%)
HSV	hsv(247, 50%, 71%)
CMYK	cmyk(44%, 50%, 0%, 28.6%)
CIE-LAB	lab(43.78, 27.67, -46.96)
CIE-LCH	lch(43.78, 54.51, 300.50°)
OKLab	oklab(52.64% 0.0385 -0.1333)
OKLCH	oklch(52.64% 0.139 286.1)
XYZ	xyz(17.6616, 13.6836, 45.9575)
Luminance	0.1368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665BB6 #ABB65B

analogous

#5B7DB6 #665BB6 #935BB6

triadic

#665BB6 #B6665B #5BB666

tetradic

#665BB6 #B65B7D #ABB65B #5BB693

square

#665BB6 #B65B7D #ABB65B #5BB693

split-complementary

#665BB6 #B6935B #7DB65B

monochromatic

#352E68 #4B4193 #665BB6 #8E85C9 #B5B0DC

Accessibility & contrast

On white

5.62

#665BB6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#665BB6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665BB6

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665BB6	#FFFFFF	#000000	##FFFFFF
##665BB6	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346AB9

Deuteranopia (green-blind)

#3265B4

Tritanopia (blue-blind)

#4D6E80

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #665bb6;
/* rgb */ color: rgb(102, 91, 182);
/* oklch */ color: oklch(52.6% 0.139 286.1);

Tailwind

colors: {
  custom: {
    50: '#9689cc',
    500: '#665bb6',
    950: '#000000',
  },
}

SCSS

$custom: #665bb6;
$custom-light: #9689cc;
$custom-dark: #000000;

JSON

{
  "hex": "#665bb6",
  "rgb": {
    "r": 102,
    "g": 91,
    "b": 182
  },
  "hsl": {
    "h": 247.253,
    "s": 38.397,
    "l": 53.529
  },
  "oklch": {
    "l": 0.52642,
    "c": 0.13877,
    "h": 286.1
  },
  "luminance": 0.13684
}

Semantic roles & 50–950 ramp

primary

#665BB6

secondary

#C5CAA3

accent

#CE59C0

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665BB6

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

Preview Lab → · Contrast checker → · Palette generator →