#3F65CF#3F65CF

#3F65CF is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.8% C 0.170 H 266.0°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F65CF
RGB	rgb(63, 101, 207)
HSL	hsl(224, 60%, 53%)
HSV	hsv(224, 70%, 81%)
CMYK	cmyk(69.6%, 51.2%, 0%, 18.8%)
CIE-LAB	lab(45.45, 22.05, -58.87)
CIE-LCH	lch(45.45, 62.87, 290.53°)
OKLab	oklab(53.77% -0.0118 -0.1691)
OKLCH	oklch(53.77% 0.17 266)
XYZ	xyz(17.9621, 14.8673, 60.9424)
Luminance	0.1487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65CF #CFA93F

analogous

#3FADCF #3F65CF #613FCF

triadic

#3F65CF #CF3F65 #65CF3F

tetradic

#3F65CF #CF3FAD #CFA93F #3FCF61

square

#3F65CF #CF3FAD #CFA93F #3FCF61

split-complementary

#3F65CF #CF613F #ADCF3F

monochromatic

#1E3576 #2A4BA7 #3F65CF #708CDB #A1B4E7

Accessibility & contrast

On white

5.28

#3F65CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#3F65CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65CF

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65CF	#FFFFFF	#000000	##FFFFFF
##3F65CF	1.00	5.28	3.97	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2373D3

Deuteranopia (green-blind)

#0065CD

Tritanopia (blue-blind)

#007E90

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f65cf;
/* rgb */ color: rgb(63, 101, 207);
/* oklch */ color: oklch(53.8% 0.170 266.0);

Tailwind

colors: {
  custom: {
    50: '#8590de',
    500: '#3f65cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f65cf;
$custom-light: #8590de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65cf",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 207
  },
  "hsl": {
    "h": 224.167,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.53768,
    "c": 0.16956,
    "h": 266
  },
  "luminance": 0.14869
}

Semantic roles & 50–950 ramp

primary

#3F65CF

secondary

#D4C496

accent

#B945E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F65CF

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

Preview Lab → · Contrast checker → · Palette generator →