#665CB0#665CB0

#665CB0 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.4% C 0.129 H 286.5°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#665CB0
RGB	rgb(102, 92, 176)
HSL	hsl(247, 35%, 53%)
HSV	hsv(247, 48%, 69%)
CMYK	cmyk(42%, 47.7%, 0%, 31%)
CIE-LAB	lab(43.67, 25.28, -43.61)
CIE-LCH	lch(43.67, 50.41, 300.10°)
OKLab	oklab(52.45% 0.0366 -0.1235)
OKLCH	oklch(52.45% 0.129 286.5)
XYZ	xyz(17.1409, 13.6130, 42.7903)
Luminance	0.1361 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665CB0 #A6B05C

analogous

#5C7CB0 #665CB0 #905CB0

triadic

#665CB0 #B0665C #5CB066

tetradic

#665CB0 #B05C7C #A6B05C #5CB090

square

#665CB0 #B05C7C #A6B05C #5CB090

split-complementary

#665CB0 #B0905C #7CB05C

monochromatic

#363062 #4C448B #665CB0 #8D85C4 #B3AED8

Accessibility & contrast

On white

5.64

#665CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#665CB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665CB0

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665CB0	#FFFFFF	#000000	##FFFFFF
##665CB0	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B69B3

Deuteranopia (green-blind)

#3A65AE

Tritanopia (blue-blind)

#506D7D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #665cb0;
/* rgb */ color: rgb(102, 92, 176);
/* oklch */ color: oklch(52.4% 0.129 286.5);

Tailwind

colors: {
  custom: {
    50: '#958ac8',
    500: '#665cb0',
    950: '#000000',
  },
}

SCSS

$custom: #665cb0;
$custom-light: #958ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#665cb0",
  "rgb": {
    "r": 102,
    "g": 92,
    "b": 176
  },
  "hsl": {
    "h": 247.143,
    "s": 34.711,
    "l": 52.549
  },
  "oklch": {
    "l": 0.5245,
    "c": 0.1288,
    "h": 286.5
  },
  "luminance": 0.13614
}

Semantic roles & 50–950 ramp

primary

#665CB0

secondary

#C2C6A2

accent

#CB5DBE

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #665CB0

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

Preview Lab → · Contrast checker → · Palette generator →