#665DCB#665DCB

#665DCB is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.4% C 0.165 H 283.1°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#665DCB
RGB	rgb(102, 93, 203)
HSL	hsl(245, 51%, 58%)
HSV	hsv(245, 54%, 80%)
CMYK	cmyk(49.8%, 54.2%, 0%, 20.4%)
CIE-LAB	lab(45.59, 32.78, -56.24)
CIE-LCH	lch(45.59, 65.09, 300.24°)
OKLab	oklab(54.42% 0.0375 -0.1605)
OKLCH	oklch(54.42% 0.165 283.1)
XYZ	xyz(20.1701, 14.9642, 58.3139)
Luminance	0.1497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665DCB #C2CB5D

analogous

#5D8BCB #665DCB #9D5DCB

triadic

#665DCB #CB665D #5DCB66

tetradic

#665DCB #CB5D8B #C2CB5D #5DCB9D

square

#665DCB #CB5D8B #C2CB5D #5DCB9D

split-complementary

#665DCB #CB9D5D #8BCB5D

monochromatic

#312A83 #4339B2 #665DCB #928BDA #BEBAE9

Accessibility & contrast

On white

5.26

#665DCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#665DCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665DCB

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665DCB	#FFFFFF	#000000	##FFFFFF
##665DCB	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E70CF

Deuteranopia (green-blind)

#1468C9

Tritanopia (blue-blind)

#40768B

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #665dcb;
/* rgb */ color: rgb(102, 93, 203);
/* oklch */ color: oklch(54.4% 0.165 283.1);

Tailwind

colors: {
  custom: {
    50: '#998bdb',
    500: '#665dcb',
    950: '#000000',
  },
}

SCSS

$custom: #665dcb;
$custom-light: #998bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#665dcb",
  "rgb": {
    "r": 102,
    "g": 93,
    "b": 203
  },
  "hsl": {
    "h": 244.909,
    "s": 51.402,
    "l": 58.039
  },
  "oklch": {
    "l": 0.54418,
    "c": 0.16487,
    "h": 283.1
  },
  "luminance": 0.14965
}

Semantic roles & 50–950 ramp

primary

#665DCB

secondary

#D4D8AC

accent

#DB4DCF

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #665DCB

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

Preview Lab → · Contrast checker → · Palette generator →