#5A66E5#5A66E5

#5A66E5 is a mid, vivid blue. Relative luminance 0.173; OKLCH L 57.1% C 0.190 H 274.6°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#5A66E5
RGB	rgb(90, 102, 229)
HSL	hsl(235, 73%, 63%)
HSV	hsv(235, 61%, 90%)
CMYK	cmyk(60.7%, 55.5%, 0%, 10.2%)
CIE-LAB	lab(48.68, 33.28, -66.09)
CIE-LCH	lch(48.68, 74.00, 296.73°)
OKLab	oklab(57.06% 0.0152 -0.1898)
OKLCH	oklch(57.06% 0.19 274.6)
XYZ	xyz(23.1060, 17.3317, 76.2413)
Luminance	0.1733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A66E5 #E5D95A

analogous

#5AACE5 #5A66E5 #935AE5

triadic

#5A66E5 #E55A66 #66E55A

tetradic

#5A66E5 #E55AAC #E5D95A #5AE593

square

#5A66E5 #E55AAC #E5D95A #5AE593

split-complementary

#5A66E5 #E5935A #ACE55A

monochromatic

#1B27AA #2535DD #5A66E5 #8F97ED #C4C8F6

Accessibility & contrast

On white

4.70

#5A66E5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#5A66E5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5A66E5

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A66E5	#FFFFFF	#000000	##FFFFFF
##5A66E5	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AE9

Deuteranopia (green-blind)

#006EE2

Tritanopia (blue-blind)

#00849C

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #5a66e5;
/* rgb */ color: rgb(90, 102, 229);
/* oklch */ color: oklch(57.1% 0.190 274.6);

Tailwind

colors: {
  custom: {
    50: '#9591ee',
    500: '#5a66e5',
    950: '#000000',
  },
}

SCSS

$custom: #5a66e5;
$custom-light: #9591ee;
$custom-dark: #000000;

JSON

{
  "hex": "#5a66e5",
  "rgb": {
    "r": 90,
    "g": 102,
    "b": 229
  },
  "hsl": {
    "h": 234.82,
    "s": 72.775,
    "l": 62.549
  },
  "oklch": {
    "l": 0.57062,
    "c": 0.19039,
    "h": 274.6
  },
  "luminance": 0.17334
}

Semantic roles & 50–950 ramp

primary

#5A66E5

secondary

#E7E2B4

accent

#C411D5

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5A66E5

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

Preview Lab → · Contrast checker → · Palette generator →