#3E66B7#3E66B7

#3E66B7 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.3% C 0.136 H 262.8°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3E66B7
RGB	rgb(62, 102, 183)
HSL	hsl(220, 49%, 48%)
HSV	hsv(220, 66%, 72%)
CMYK	cmyk(66.1%, 44.3%, 0%, 28.2%)
CIE-LAB	lab(44.15, 12.61, -47.09)
CIE-LCH	lch(44.15, 48.75, 284.99°)
OKLab	oklab(52.27% -0.017 -0.1345)
OKLCH	oklch(52.27% 0.136 262.8)
XYZ	xyz(15.2822, 13.9443, 46.6767)
Luminance	0.1395 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E66B7 #B78F3E

analogous

#3EA3B7 #3E66B7 #523EB7

triadic

#3E66B7 #B73E66 #66B73E

tetradic

#3E66B7 #B73EA3 #B78F3E #3EB752

square

#3E66B7 #B73EA3 #B78F3E #3EB752

split-complementary

#3E66B7 #B7523E #A3B73E

monochromatic

#1F335C #2F4D89 #3E66B7 #6788CB #94ACDB

Accessibility & contrast

On white

5.54

#3E66B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3E66B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3E66B7

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E66B7	#FFFFFF	#000000	##FFFFFF
##3E66B7	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6EBA

Deuteranopia (green-blind)

#2B63B5

Tritanopia (blue-blind)

#007985

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3e66b7;
/* rgb */ color: rgb(62, 102, 183);
/* oklch */ color: oklch(52.3% 0.136 262.8);

Tailwind

colors: {
  custom: {
    50: '#8091cd',
    500: '#3e66b7',
    950: '#000000',
  },
}

SCSS

$custom: #3e66b7;
$custom-light: #8091cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3e66b7",
  "rgb": {
    "r": 62,
    "g": 102,
    "b": 183
  },
  "hsl": {
    "h": 220.165,
    "s": 49.388,
    "l": 48.039
  },
  "oklch": {
    "l": 0.52272,
    "c": 0.13558,
    "h": 262.8
  },
  "luminance": 0.13946
}

Semantic roles & 50–950 ramp

primary

#3E66B7

secondary

#C6B38A

accent

#AB4FD9

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3E66B7

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

Preview Lab → · Contrast checker → · Palette generator →