#3A66D7#3A66D7

#3A66D7 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 54.3% C 0.181 H 264.9°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#3A66D7
RGB	rgb(58, 102, 215)
HSL	hsl(223, 66%, 54%)
HSV	hsv(223, 73%, 84%)
CMYK	cmyk(73%, 52.6%, 0%, 15.7%)
CIE-LAB	lab(46.05, 23.64, -62.48)
CIE-LCH	lch(46.05, 66.81, 290.73°)
OKLab	oklab(54.34% -0.016 -0.1799)
OKLCH	oklch(54.34% 0.181 264.9)
XYZ	xyz(18.7577, 15.3066, 66.2427)
Luminance	0.1531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A66D7 #D7AB3A

analogous

#3AB4D7 #3A66D7 #5C3AD7

triadic

#3A66D7 #D73A66 #66D73A

tetradic

#3A66D7 #D73AB4 #D7AB3A #3AD75C

square

#3A66D7 #D73AB4 #D7AB3A #3AD75C

split-complementary

#3A66D7 #D75C3A #B4D73A

monochromatic

#19357D #244BB0 #3A66D7 #6D8EE1 #A0B5EC

Accessibility & contrast

On white

5.17

#3A66D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#3A66D7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A66D7

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A66D7	#FFFFFF	#000000	##FFFFFF
##3A66D7	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1475DB

Deuteranopia (green-blind)

#0066D5

Tritanopia (blue-blind)

#008195

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3a66d7;
/* rgb */ color: rgb(58, 102, 215);
/* oklch */ color: oklch(54.3% 0.181 264.9);

Tailwind

colors: {
  custom: {
    50: '#8591e4',
    500: '#3a66d7',
    950: '#000000',
  },
}

SCSS

$custom: #3a66d7;
$custom-light: #8591e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3a66d7",
  "rgb": {
    "r": 58,
    "g": 102,
    "b": 215
  },
  "hsl": {
    "h": 223.185,
    "s": 66.245,
    "l": 53.529
  },
  "oklch": {
    "l": 0.54337,
    "c": 0.18057,
    "h": 264.9
  },
  "luminance": 0.15309
}

Semantic roles & 50–950 ramp

primary

#3A66D7

secondary

#D8C595

accent

#B93FE9

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0C0C16

muted

#7D7D84

Preview Lab

Preview with #3A66D7

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

Preview Lab → · Contrast checker → · Palette generator →