#5A66CF#5A66CF

#5A66CF is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.5% C 0.161 H 275.0°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#5A66CF
RGB	rgb(90, 102, 207)
HSL	hsl(234, 55%, 58%)
HSV	hsv(234, 57%, 81%)
CMYK	cmyk(56.5%, 50.7%, 0%, 18.8%)
CIE-LAB	lab(47.21, 26.06, -55.96)
CIE-LCH	lch(47.21, 61.73, 294.97°)
OKLab	oklab(55.5% 0.014 -0.16)
OKLCH	oklch(55.5% 0.161 275)
XYZ	xyz(20.2267, 16.1799, 61.0766)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A66CF #CFC35A

analogous

#5AA0CF #5A66CF #885ACF

triadic

#5A66CF #CF5A66 #66CF5A

tetradic

#5A66CF #CF5AA0 #CFC35A #5ACF88

square

#5A66CF #CF5AA0 #CFC35A #5ACF88

split-complementary

#5A66CF #CF885A #A0CF5A

monochromatic

#273187 #3542B7 #5A66CF #8992DD #B9BEEB

Accessibility & contrast

On white

4.96

#5A66CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#5A66CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5A66CF

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A66CF	#FFFFFF	#000000	##FFFFFF
##5A66CF	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E75D3

Deuteranopia (green-blind)

#196BCD

Tritanopia (blue-blind)

#137E91

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #5a66cf;
/* rgb */ color: rgb(90, 102, 207);
/* oklch */ color: oklch(55.5% 0.161 275.0);

Tailwind

colors: {
  custom: {
    50: '#9291de',
    500: '#5a66cf',
    950: '#000000',
  },
}

SCSS

$custom: #5a66cf;
$custom-light: #9291de;
$custom-dark: #000000;

JSON

{
  "hex": "#5a66cf",
  "rgb": {
    "r": 90,
    "g": 102,
    "b": 207
  },
  "hsl": {
    "h": 233.846,
    "s": 54.93,
    "l": 58.235
  },
  "oklch": {
    "l": 0.55496,
    "c": 0.16059,
    "h": 275
  },
  "luminance": 0.16181
}

Semantic roles & 50–950 ramp

primary

#5A66CF

secondary

#DAD5AB

accent

#CF4ADE

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #5A66CF

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

Preview Lab → · Contrast checker → · Palette generator →