#665AA3#665AA3

#665AA3 is a mid, moderate blue. Relative luminance 0.128; OKLCH L 51.3% C 0.113 H 289.3°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#665AA3
RGB	rgb(102, 90, 163)
HSL	hsl(250, 29%, 50%)
HSV	hsv(250, 45%, 64%)
CMYK	cmyk(37.4%, 44.8%, 0%, 36.1%)
CIE-LAB	lab(42.43, 22.74, -37.91)
CIE-LCH	lch(42.43, 44.21, 300.96°)
OKLab	oklab(51.28% 0.0375 -0.1068)
OKLCH	oklch(51.28% 0.113 289.3)
XYZ	xyz(15.7447, 12.7810, 36.2807)
Luminance	0.1278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665AA3 #97A35A

analogous

#5A73A3 #665AA3 #8B5AA3

triadic

#665AA3 #A3665A #5AA366

tetradic

#665AA3 #A35A73 #97A35A #5AA38B

square

#665AA3 #A35A73 #97A35A #5AA38B

split-complementary

#665AA3 #A38B5A #73A35A

monochromatic

#352E54 #4D447C #665AA3 #8A81B9 #AFA8CF

Accessibility & contrast

On white

5.91

#665AA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#665AA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665AA3

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665AA3	#FFFFFF	#000000	##FFFFFF
##665AA3	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4166A6

Deuteranopia (green-blind)

#4162A1

Tritanopia (blue-blind)

#566876

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #665aa3;
/* rgb */ color: rgb(102, 90, 163);
/* oklch */ color: oklch(51.3% 0.113 289.3);

Tailwind

colors: {
  custom: {
    50: '#9488be',
    500: '#665aa3',
    950: '#000000',
  },
}

SCSS

$custom: #665aa3;
$custom-light: #9488be;
$custom-dark: #000000;

JSON

{
  "hex": "#665aa3",
  "rgb": {
    "r": 102,
    "g": 90,
    "b": 163
  },
  "hsl": {
    "h": 249.863,
    "s": 28.854,
    "l": 49.608
  },
  "oklch": {
    "l": 0.51276,
    "c": 0.11318,
    "h": 289.3
  },
  "luminance": 0.12781
}

Semantic roles & 50–950 ramp

primary

#665AA3

secondary

#B8BD9C

accent

#C563B5

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #665AA3

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

Preview Lab → · Contrast checker → · Palette generator →