#3F65BE#3F65BE

#3F65BE is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.6% C 0.146 H 264.5°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F65BE
RGB	rgb(63, 101, 190)
HSL	hsl(222, 50%, 50%)
HSV	hsv(222, 67%, 75%)
CMYK	cmyk(66.8%, 46.8%, 0%, 25.5%)
CIE-LAB	lab(44.35, 15.93, -50.85)
CIE-LCH	lch(44.35, 53.28, 287.39°)
OKLab	oklab(52.57% -0.014 -0.1455)
OKLCH	oklch(52.57% 0.146 264.5)
XYZ	xyz(15.9946, 14.0803, 50.5801)
Luminance	0.1408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65BE #BE983F

analogous

#3FA5BE #3F65BE #583FBE

triadic

#3F65BE #BE3F65 #65BE3F

tetradic

#3F65BE #BE3FA5 #BE983F #3FBE58

square

#3F65BE #BE3FA5 #BE983F #3FBE58

split-complementary

#3F65BE #BE583F #A5BE3F

monochromatic

#213462 #304D90 #3F65BE #6C89CE #9AAEDD

Accessibility & contrast

On white

5.50

#3F65BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3F65BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65BE

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65BE	#FFFFFF	#000000	##FFFFFF
##3F65BE	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386FC1

Deuteranopia (green-blind)

#1E63BC

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f65be;
/* rgb */ color: rgb(63, 101, 190);
/* oklch */ color: oklch(52.6% 0.146 264.5);

Tailwind

colors: {
  custom: {
    50: '#8290d2',
    500: '#3f65be',
    950: '#000000',
  },
}

SCSS

$custom: #3f65be;
$custom-light: #8290d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65be",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 190
  },
  "hsl": {
    "h": 222.047,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.52573,
    "c": 0.14621,
    "h": 264.5
  },
  "luminance": 0.14082
}

Semantic roles & 50–950 ramp

primary

#3F65BE

secondary

#C9B88F

accent

#B04EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F65BE

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

Preview Lab → · Contrast checker → · Palette generator →