#3A66CF#3A66CF

#3A66CF is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.7% C 0.170 H 264.3°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3A66CF
RGB	rgb(58, 102, 207)
HSL	hsl(222, 61%, 52%)
HSV	hsv(222, 72%, 81%)
CMYK	cmyk(72%, 50.7%, 0%, 18.8%)
CIE-LAB	lab(45.50, 20.72, -58.80)
CIE-LCH	lch(45.50, 62.34, 289.41°)
OKLab	oklab(53.75% -0.0168 -0.169)
OKLCH	oklch(53.75% 0.17 264.3)
XYZ	xyz(17.7548, 14.9054, 60.9607)
Luminance	0.1491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A66CF #CFA33A

analogous

#3AB0CF #3A66CF #593ACF

triadic

#3A66CF #CF3A66 #66CF3A

tetradic

#3A66CF #CF3AB0 #CFA33A #3ACF59

square

#3A66CF #CF3AB0 #CFA33A #3ACF59

split-complementary

#3A66CF #CF593A #B0CF3A

monochromatic

#1C3673 #284DA4 #3A66CF #6B8CDB #9CB2E7

Accessibility & contrast

On white

5.27

#3A66CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#3A66CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A66CF

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A66CF	#FFFFFF	#000000	##FFFFFF
##3A66CF	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2573D3

Deuteranopia (green-blind)

#0065CD

Tritanopia (blue-blind)

#007F91

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3a66cf;
/* rgb */ color: rgb(58, 102, 207);
/* oklch */ color: oklch(53.7% 0.170 264.3);

Tailwind

colors: {
  custom: {
    50: '#8391de',
    500: '#3a66cf',
    950: '#000000',
  },
}

SCSS

$custom: #3a66cf;
$custom-light: #8391de;
$custom-dark: #000000;

JSON

{
  "hex": "#3a66cf",
  "rgb": {
    "r": 58,
    "g": 102,
    "b": 207
  },
  "hsl": {
    "h": 222.282,
    "s": 60.816,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53748,
    "c": 0.16984,
    "h": 264.3
  },
  "luminance": 0.14907
}

Semantic roles & 50–950 ramp

primary

#3A66CF

secondary

#D3C092

accent

#B544E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3A66CF

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

Preview Lab → · Contrast checker → · Palette generator →