#3E66CB#3E66CB

#3E66CB is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.6% C 0.163 H 265.1°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3E66CB
RGB	rgb(62, 102, 203)
HSL	hsl(223, 58%, 52%)
HSV	hsv(223, 69%, 80%)
CMYK	cmyk(69.5%, 49.8%, 0%, 20.4%)
CIE-LAB	lab(45.41, 19.82, -56.65)
CIE-LCH	lch(45.41, 60.01, 289.29°)
OKLab	oklab(53.64% -0.014 -0.1626)
OKLCH	oklch(53.64% 0.163 265.1)
XYZ	xyz(17.5137, 14.8369, 58.4291)
Luminance	0.1484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E66CB #CBA33E

analogous

#3EACCB #3E66CB #5D3ECB

triadic

#3E66CB #CB3E66 #66CB3E

tetradic

#3E66CB #CB3EAC #CBA33E #3ECB5D

square

#3E66CB #CB3EAC #CBA33E #3ECB5D

split-complementary

#3E66CB #CB5D3E #ACCB3E

monochromatic

#1E3670 #2B4DA1 #3E66CB #6E8CD8 #9EB2E5

Accessibility & contrast

On white

5.29

#3E66CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#3E66CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3E66CB

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E66CB	#FFFFFF	#000000	##FFFFFF
##3E66CB	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C72CF

Deuteranopia (green-blind)

#0065C9

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3e66cb;
/* rgb */ color: rgb(62, 102, 203);
/* oklch */ color: oklch(53.6% 0.163 265.1);

Tailwind

colors: {
  custom: {
    50: '#8491db',
    500: '#3e66cb',
    950: '#000000',
  },
}

SCSS

$custom: #3e66cb;
$custom-light: #8491db;
$custom-dark: #000000;

JSON

{
  "hex": "#3e66cb",
  "rgb": {
    "r": 62,
    "g": 102,
    "b": 203
  },
  "hsl": {
    "h": 222.979,
    "s": 57.551,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53639,
    "c": 0.16321,
    "h": 265.1
  },
  "luminance": 0.14839
}

Semantic roles & 50–950 ramp

primary

#3E66CB

secondary

#D1C094

accent

#B547E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3E66CB

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

Preview Lab → · Contrast checker → · Palette generator →