#665DBB#665DBB

#665DBB is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.3% C 0.143 H 284.8°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#665DBB
RGB	rgb(102, 93, 187)
HSL	hsl(246, 41%, 55%)
HSV	hsv(246, 50%, 73%)
CMYK	cmyk(45.5%, 50.3%, 0%, 26.7%)
CIE-LAB	lab(44.58, 27.94, -48.60)
CIE-LCH	lch(44.58, 56.06, 299.89°)
OKLab	oklab(53.34% 0.0365 -0.1381)
OKLCH	oklch(53.34% 0.143 284.8)
XYZ	xyz(18.3609, 14.2405, 48.7853)
Luminance	0.1424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665DBB #B2BB5D

analogous

#5D83BB #665DBB #955DBB

triadic

#665DBB #BB665D #5DBB66

tetradic

#665DBB #BB5D83 #B2BB5D #5DBB95

square

#665DBB #BB5D83 #B2BB5D #5DBB95

split-complementary

#665DBB #BB955D #83BB5D

monochromatic

#352F6F #49419A #665DBB #8F88CD #B7B3DF

Accessibility & contrast

On white

5.46

#665DBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#665DBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665DBB

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665DBB	#FFFFFF	#000000	##FFFFFF
##665DBB	1.00	5.46	3.85	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336CBE

Deuteranopia (green-blind)

#3067B9

Tritanopia (blue-blind)

#4B7183

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #665dbb;
/* rgb */ color: rgb(102, 93, 187);
/* oklch */ color: oklch(53.3% 0.143 284.8);

Tailwind

colors: {
  custom: {
    50: '#978bd0',
    500: '#665dbb',
    950: '#000000',
  },
}

SCSS

$custom: #665dbb;
$custom-light: #978bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#665dbb",
  "rgb": {
    "r": 102,
    "g": 93,
    "b": 187
  },
  "hsl": {
    "h": 245.745,
    "s": 40.87,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5334,
    "c": 0.14284,
    "h": 284.8
  },
  "luminance": 0.14241
}

Semantic roles & 50–950 ramp

primary

#665DBB

secondary

#CACEA6

accent

#D157C5

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #665DBB

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

Preview Lab → · Contrast checker → · Palette generator →