#665CB4#665CB4

#665CB4 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.7% C 0.134 H 286.0°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#665CB4
RGB	rgb(102, 92, 180)
HSL	hsl(247, 37%, 53%)
HSV	hsv(247, 49%, 71%)
CMYK	cmyk(43.3%, 48.9%, 0%, 29.4%)
CIE-LAB	lab(43.91, 26.46, -45.58)
CIE-LCH	lch(43.91, 52.71, 300.13°)
OKLab	oklab(52.7% 0.0371 -0.1293)
OKLCH	oklch(52.7% 0.134 286)
XYZ	xyz(17.5425, 13.7737, 44.9054)
Luminance	0.1377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CB4 #AAB45C

analogous

#5C7EB4 #665CB4 #925CB4

triadic

#665CB4 #B4665C #5CB466

tetradic

#665CB4 #B45C7E #AAB45C #5CB492

square

#665CB4 #B45C7E #AAB45C #5CB492

split-complementary

#665CB4 #B4925C #7EB45C

monochromatic

#352F66 #4B4290 #665CB4 #8D86C7 #B5B0DB

Accessibility & contrast

On white

5.59

#665CB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#665CB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CB4

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CB4	#FFFFFF	#000000	##FFFFFF
##665CB4	1.00	5.59	3.75	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386AB7

Deuteranopia (green-blind)

#3665B2

Tritanopia (blue-blind)

#4E6E7F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #665cb4;
/* rgb */ color: rgb(102, 92, 180);
/* oklch */ color: oklch(52.7% 0.134 286.0);

Tailwind

colors: {
  custom: {
    50: '#968acb',
    500: '#665cb4',
    950: '#000000',
  },
}

SCSS

$custom: #665cb4;
$custom-light: #968acb;
$custom-dark: #000000;

JSON

{
  "hex": "#665cb4",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 180
  },
  "hsl": {
    "h": 246.818,
    "s": 36.975,
    "l": 53.333
  },
  "oklch": {
    "l": 0.52702,
    "c": 0.13447,
    "h": 286
  },
  "luminance": 0.13774
}

Semantic roles & 50–950 ramp

primary

#665CB4

secondary

#C5C9A3

accent

#CD5BC0

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665CB4

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

Preview Lab → · Contrast checker → · Palette generator →