#3A66D0#3A66D0

#3A66D0 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.8% C 0.171 H 264.4°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#3A66D0
RGB	rgb(58, 102, 208)
HSL	hsl(222, 61%, 52%)
HSV	hsv(222, 72%, 82%)
CMYK	cmyk(72.1%, 51%, 0%, 18.4%)
CIE-LAB	lab(45.57, 21.08, -59.26)
CIE-LCH	lch(45.57, 62.90, 289.58°)
OKLab	oklab(53.82% -0.0167 -0.1704)
OKLCH	oklch(53.82% 0.171 264.4)
XYZ	xyz(17.8774, 14.9544, 61.6066)
Luminance	0.1496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A66D0 #D0A43A

analogous

#3AB1D0 #3A66D0 #593AD0

triadic

#3A66D0 #D03A66 #66D03A

tetradic

#3A66D0 #D03AB1 #D0A43A #3AD059

square

#3A66D0 #D03AB1 #D0A43A #3AD059

split-complementary

#3A66D0 #D0593A #B1D03A

monochromatic

#1C3674 #274CA5 #3A66D0 #6B8CDC #9DB3E8

Accessibility & contrast

On white

5.26

#3A66D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#3A66D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A66D0

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A66D0	#FFFFFF	#000000	##FFFFFF
##3A66D0	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2373D4

Deuteranopia (green-blind)

#0065CE

Tritanopia (blue-blind)

#007F91

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3a66d0;
/* rgb */ color: rgb(58, 102, 208);
/* oklch */ color: oklch(53.8% 0.171 264.4);

Tailwind

colors: {
  custom: {
    50: '#8391df',
    500: '#3a66d0',
    950: '#000000',
  },
}

SCSS

$custom: #3a66d0;
$custom-light: #8391df;
$custom-dark: #000000;

JSON

{
  "hex": "#3a66d0",
  "rgb": {
    "r": 58,
    "g": 102,
    "b": 208
  },
  "hsl": {
    "h": 222.4,
    "s": 61.475,
    "l": 52.157
  },
  "oklch": {
    "l": 0.53821,
    "c": 0.1712,
    "h": 264.4
  },
  "luminance": 0.14956
}

Semantic roles & 50–950 ramp

primary

#3A66D0

secondary

#D4C092

accent

#B543E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3A66D0

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

Preview Lab → · Contrast checker → · Palette generator →