#665FCB#665FCB

#665FCB is a mid, vivid blue. Relative luminance 0.153; OKLCH L 54.8% C 0.162 H 282.6°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#665FCB
RGB	rgb(102, 95, 203)
HSL	hsl(244, 51%, 58%)
HSV	hsv(244, 53%, 80%)
CMYK	cmyk(49.8%, 53.2%, 0%, 20.4%)
CIE-LAB	lab(46.07, 31.57, -55.46)
CIE-LCH	lch(46.07, 63.81, 299.65°)
OKLab	oklab(54.78% 0.0352 -0.1582)
OKLCH	oklch(54.78% 0.162 282.6)
XYZ	xyz(20.3479, 15.3199, 58.3732)
Luminance	0.1532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#665FCB #C4CB5F

analogous

#5F8ECB #665FCB #9C5FCB

triadic

#665FCB #CB665F #5FCB66

tetradic

#665FCB #CB5F8E #C4CB5F #5FCB9C

square

#665FCB #CB5F8E #C4CB5F #5FCB9C

split-complementary

#665FCB #CB9C5F #8ECB5F

monochromatic

#312B85 #423AB3 #665FCB #928DDA #BEBBE9

Accessibility & contrast

On white

5.17

#665FCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#665FCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #665FCB

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##665FCB	#FFFFFF	#000000	##FFFFFF
##665FCB	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2571CF

Deuteranopia (green-blind)

#1B69C9

Tritanopia (blue-blind)

#40778C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #665fcb;
/* rgb */ color: rgb(102, 95, 203);
/* oklch */ color: oklch(54.8% 0.162 282.6);

Tailwind

colors: {
  custom: {
    50: '#988cdb',
    500: '#665fcb',
    950: '#000000',
  },
}

SCSS

$custom: #665fcb;
$custom-light: #988cdb;
$custom-dark: #000000;

JSON

{
  "hex": "#665fcb",
  "rgb": {
    "r": 102,
    "g": 95,
    "b": 203
  },
  "hsl": {
    "h": 243.889,
    "s": 50.943,
    "l": 58.431
  },
  "oklch": {
    "l": 0.54779,
    "c": 0.16212,
    "h": 282.6
  },
  "luminance": 0.15321
}

Semantic roles & 50–950 ramp

primary

#665FCB

secondary

#D6D8AD

accent

#DA4DD1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #665FCB

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

Preview Lab → · Contrast checker → · Palette generator →