#5A66CD#5A66CD

#5A66CD is a mid, vivid blue. Relative luminance 0.161; OKLCH L 55.4% C 0.158 H 275.0°. Best body text is #FFFFFF at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#5A66CD
RGB	rgb(90, 102, 205)
HSL	hsl(234, 53%, 58%)
HSV	hsv(234, 56%, 80%)
CMYK	cmyk(56.1%, 50.2%, 0%, 19.6%)
CIE-LAB	lab(47.08, 25.41, -55.02)
CIE-LCH	lch(47.08, 60.60, 294.78°)
OKLab	oklab(55.36% 0.0138 -0.1572)
OKLCH	oklch(55.36% 0.158 275)
XYZ	xyz(19.9837, 16.0828, 59.7970)
Luminance	0.1608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A66CD #CDC15A

analogous

#5A9FCD #5A66CD #875ACD

triadic

#5A66CD #CD5A66 #66CD5A

tetradic

#5A66CD #CD5A9F #CDC15A #5ACD87

square

#5A66CD #CD5A9F #CDC15A #5ACD87

split-complementary

#5A66CD #CD875A #9FCD5A

monochromatic

#283284 #3643B3 #5A66CD #8992DB #B8BDE9

Accessibility & contrast

On white

4.98

#5A66CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#5A66CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5A66CD

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A66CD	#FFFFFF	#000000	##FFFFFF
##5A66CD	1.00	4.98	4.22	4.98
#FFFFFF	4.98	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3175D1

Deuteranopia (green-blind)

#1E6BCB

Tritanopia (blue-blind)

#187D90

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #5a66cd;
/* rgb */ color: rgb(90, 102, 205);
/* oklch */ color: oklch(55.4% 0.158 275.0);

Tailwind

colors: {
  custom: {
    50: '#9291dd',
    500: '#5a66cd',
    950: '#000000',
  },
}

SCSS

$custom: #5a66cd;
$custom-light: #9291dd;
$custom-dark: #000000;

JSON

{
  "hex": "#5a66cd",
  "rgb": {
    "r": 90,
    "g": 102,
    "b": 205
  },
  "hsl": {
    "h": 233.739,
    "s": 53.488,
    "l": 57.843
  },
  "oklch": {
    "l": 0.5536,
    "c": 0.15782,
    "h": 275
  },
  "luminance": 0.16084
}

Semantic roles & 50–950 ramp

primary

#5A66CD

secondary

#D8D4AA

accent

#CE4BDD

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #5A66CD

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

Preview Lab → · Contrast checker → · Palette generator →