#5A66CB#5A66CB

#5A66CB is a mid, vivid blue. Relative luminance 0.160; OKLCH L 55.2% C 0.155 H 275.0°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#5A66CB
RGB	rgb(90, 102, 203)
HSL	hsl(234, 52%, 57%)
HSV	hsv(234, 56%, 80%)
CMYK	cmyk(55.7%, 49.8%, 0%, 20.4%)
CIE-LAB	lab(46.96, 24.75, -54.07)
CIE-LCH	lch(46.96, 59.47, 294.60°)
OKLab	oklab(55.22% 0.0136 -0.1544)
OKLCH	oklch(55.22% 0.155 275)
XYZ	xyz(19.7438, 15.9868, 58.5337)
Luminance	0.1599 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A66CB #CBBF5A

analogous

#5A9FCB #5A66CB #865ACB

triadic

#5A66CB #CB5A66 #66CB5A

tetradic

#5A66CB #CB5A9F #CBBF5A #5ACB86

square

#5A66CB #CB5A9F #CBBF5A #5ACB86

split-complementary

#5A66CB #CB865A #9FCB5A

monochromatic

#293282 #3844B0 #5A66CB #8991DA #B7BCE8

Accessibility & contrast

On white

5.00

#5A66CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#5A66CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5A66CB

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A66CB	#FFFFFF	#000000	##FFFFFF
##5A66CB	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3374CF

Deuteranopia (green-blind)

#226BC9

Tritanopia (blue-blind)

#1C7D8F

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #5a66cb;
/* rgb */ color: rgb(90, 102, 203);
/* oklch */ color: oklch(55.2% 0.155 275.0);

Tailwind

colors: {
  custom: {
    50: '#9191db',
    500: '#5a66cb',
    950: '#000000',
  },
}

SCSS

$custom: #5a66cb;
$custom-light: #9191db;
$custom-dark: #000000;

JSON

{
  "hex": "#5a66cb",
  "rgb": {
    "r": 90,
    "g": 102,
    "b": 203
  },
  "hsl": {
    "h": 233.628,
    "s": 52.074,
    "l": 57.451
  },
  "oklch": {
    "l": 0.55224,
    "c": 0.15504,
    "h": 275
  },
  "luminance": 0.15988
}

Semantic roles & 50–950 ramp

primary

#5A66CB

secondary

#D7D2AA

accent

#CC4CDC

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #5A66CB

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

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