#3A66D5#3A66D5

#3A66D5 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.2% C 0.178 H 264.8°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#3A66D5
RGB	rgb(58, 102, 213)
HSL	hsl(223, 65%, 53%)
HSV	hsv(223, 73%, 84%)
CMYK	cmyk(72.8%, 52.1%, 0%, 16.5%)
CIE-LAB	lab(45.91, 22.91, -61.57)
CIE-LCH	lch(45.91, 65.69, 290.41°)
OKLab	oklab(54.19% -0.0162 -0.1772)
OKLCH	oklch(54.19% 0.178 264.8)
XYZ	xyz(18.5023, 15.2044, 64.8975)
Luminance	0.1521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A66D5 #D5A93A

analogous

#3AB3D5 #3A66D5 #5B3AD5

triadic

#3A66D5 #D53A66 #66D53A

tetradic

#3A66D5 #D53AB3 #D5A93A #3AD55B

square

#3A66D5 #D53AB3 #D5A93A #3AD55B

split-complementary

#3A66D5 #D55B3A #B3D53A

monochromatic

#1A357A #254BAD #3A66D5 #6C8DE0 #9FB4EB

Accessibility & contrast

On white

5.20

#3A66D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#3A66D5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A66D5

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A66D5	#FFFFFF	#000000	##FFFFFF
##3A66D5	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1974D9

Deuteranopia (green-blind)

#0066D3

Tritanopia (blue-blind)

#008194

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3a66d5;
/* rgb */ color: rgb(58, 102, 213);
/* oklch */ color: oklch(54.2% 0.178 264.8);

Tailwind

colors: {
  custom: {
    50: '#8491e3',
    500: '#3a66d5',
    950: '#000000',
  },
}

SCSS

$custom: #3a66d5;
$custom-light: #8491e3;
$custom-dark: #000000;

JSON

{
  "hex": "#3a66d5",
  "rgb": {
    "r": 58,
    "g": 102,
    "b": 213
  },
  "hsl": {
    "h": 222.968,
    "s": 64.854,
    "l": 53.137
  },
  "oklch": {
    "l": 0.54189,
    "c": 0.1779,
    "h": 264.8
  },
  "luminance": 0.15206
}

Semantic roles & 50–950 ramp

primary

#3A66D5

secondary

#D7C494

accent

#B840E8

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0C0C15

muted

#7D7D84

Preview Lab

Preview with #3A66D5

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

Preview Lab → · Contrast checker → · Palette generator →