#3F65BD#3F65BD

#3F65BD is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.5% C 0.145 H 264.4°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F65BD
RGB	rgb(63, 101, 189)
HSL	hsl(222, 50%, 49%)
HSV	hsv(222, 67%, 74%)
CMYK	cmyk(66.7%, 46.6%, 0%, 25.9%)
CIE-LAB	lab(44.29, 15.57, -50.37)
CIE-LCH	lch(44.29, 52.72, 287.17°)
OKLab	oklab(52.51% -0.0141 -0.1441)
OKLCH	oklch(52.51% 0.145 264.4)
XYZ	xyz(15.8857, 14.0367, 50.0064)
Luminance	0.1404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65BD #BD973F

analogous

#3FA4BD #3F65BD #583FBD

triadic

#3F65BD #BD3F65 #65BD3F

tetradic

#3F65BD #BD3FA4 #BD973F #3FBD58

square

#3F65BD #BD3FA4 #BD973F #3FBD58

split-complementary

#3F65BD #BD583F #A4BD3F

monochromatic

#203461 #304C8F #3F65BD #6B89CE #99AEDD

Accessibility & contrast

On white

5.52

#3F65BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3F65BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65BD

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65BD	#FFFFFF	#000000	##FFFFFF
##3F65BD	1.00	5.52	3.81	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396FC0

Deuteranopia (green-blind)

#2063BB

Tritanopia (blue-blind)

#007988

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f65bd;
/* rgb */ color: rgb(63, 101, 189);
/* oklch */ color: oklch(52.5% 0.145 264.4);

Tailwind

colors: {
  custom: {
    50: '#8190d1',
    500: '#3f65bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f65bd;
$custom-light: #8190d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65bd",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 189
  },
  "hsl": {
    "h": 221.905,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.52505,
    "c": 0.14482,
    "h": 264.4
  },
  "luminance": 0.14038
}

Semantic roles & 50–950 ramp

primary

#3F65BD

secondary

#C9B78F

accent

#B04EDA

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3F65BD

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

Preview Lab → · Contrast checker → · Palette generator →