#3665BE#3665BE

#3665BE is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.2% C 0.149 H 261.7°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#3665BE
RGB	rgb(54, 101, 190)
HSL	hsl(219, 56%, 48%)
HSV	hsv(219, 72%, 75%)
CMYK	cmyk(71.6%, 46.8%, 0%, 25.5%)
CIE-LAB	lab(43.96, 14.54, -51.50)
CIE-LCH	lch(43.96, 53.51, 285.77°)
OKLab	oklab(52.16% -0.0214 -0.1476)
OKLCH	oklch(52.16% 0.149 261.7)
XYZ	xyz(15.4659, 13.8077, 50.5553)
Luminance	0.1381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665BE #BE8F36

analogous

#36A9BE #3665BE #4B36BE

triadic

#3665BE #BE3665 #65BE36

tetradic

#3665BE #BE36A9 #BE8F36 #36BE4B

square

#3665BE #BE36A9 #BE8F36 #36BE4B

split-complementary

#3665BE #BE4B36 #A9BE36

monochromatic

#1B325F #284C8E #3665BE #6087D2 #8FABDF

Accessibility & contrast

On white

5.58

#3665BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#3665BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665BE

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665BE	#FFFFFF	#000000	##FFFFFF
##3665BE	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366FC1

Deuteranopia (green-blind)

#1662BC

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3665be;
/* rgb */ color: rgb(54, 101, 190);
/* oklch */ color: oklch(52.2% 0.149 261.7);

Tailwind

colors: {
  custom: {
    50: '#7e90d2',
    500: '#3665be',
    950: '#000000',
  },
}

SCSS

$custom: #3665be;
$custom-light: #7e90d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3665be",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 190
  },
  "hsl": {
    "h": 219.265,
    "s": 55.738,
    "l": 47.843
  },
  "oklch": {
    "l": 0.52164,
    "c": 0.14916,
    "h": 261.7
  },
  "luminance": 0.13809
}

Semantic roles & 50–950 ramp

primary

#3665BE

secondary

#CAB286

accent

#AB49DF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3665BE

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

Preview Lab → · Contrast checker → · Palette generator →