#5A66DB#5A66DB

#5A66DB is a mid, vivid blue. Relative luminance 0.168; OKLCH L 56.3% C 0.177 H 274.8°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#5A66DB
RGB	rgb(90, 102, 219)
HSL	hsl(234, 64%, 61%)
HSV	hsv(234, 59%, 86%)
CMYK	cmyk(58.9%, 53.4%, 0%, 14.1%)
CIE-LAB	lab(47.99, 29.99, -61.54)
CIE-LCH	lch(47.99, 68.46, 295.99°)
OKLab	oklab(56.34% 0.0148 -0.1764)
OKLCH	oklch(56.34% 0.177 274.8)
XYZ	xyz(21.7498, 16.7892, 69.0986)
Luminance	0.1679 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5A66DB #DBCF5A

analogous

#5AA6DB #5A66DB #8F5ADB

triadic

#5A66DB #DB5A66 #66DB5A

tetradic

#5A66DB #DB5AA6 #DBCF5A #5ADB8F

square

#5A66DB #DB5AA6 #DBCF5A #5ADB8F

split-complementary

#5A66DB #DB8F5A #A6DB5A

monochromatic

#212D99 #2C3BCB #5A66DB #8C95E6 #BEC3F1

Accessibility & contrast

On white

4.82

#5A66DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#5A66DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5A66DB

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5A66DB	#FFFFFF	#000000	##FFFFFF
##5A66DB	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A78DF

Deuteranopia (green-blind)

#006DD9

Tritanopia (blue-blind)

#008197

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #5a66db;
/* rgb */ color: rgb(90, 102, 219);
/* oklch */ color: oklch(56.3% 0.177 274.8);

Tailwind

colors: {
  custom: {
    50: '#9491e7',
    500: '#5a66db',
    950: '#000000',
  },
}

SCSS

$custom: #5a66db;
$custom-light: #9491e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5a66db",
  "rgb": {
    "r": 90,
    "g": 102,
    "b": 219
  },
  "hsl": {
    "h": 234.419,
    "s": 64.179,
    "l": 60.588
  },
  "oklch": {
    "l": 0.56335,
    "c": 0.17701,
    "h": 274.8
  },
  "luminance": 0.16791
}

Semantic roles & 50–950 ramp

primary

#5A66DB

secondary

#E1DCB0

accent

#BB1ACC

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0E0C16

muted

#7E7D84

Preview Lab

Preview with #5A66DB

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

Preview Lab → · Contrast checker → · Palette generator →