#3F65D0#3F65D0

#3F65D0 is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.8% C 0.171 H 266.1°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F65D0
RGB	rgb(63, 101, 208)
HSL	hsl(224, 61%, 53%)
HSV	hsv(224, 70%, 82%)
CMYK	cmyk(69.7%, 51.4%, 0%, 18.4%)
CIE-LAB	lab(45.52, 22.41, -59.33)
CIE-LCH	lch(45.52, 63.43, 290.69°)
OKLab	oklab(53.84% -0.0117 -0.1705)
OKLCH	oklch(53.84% 0.171 266.1)
XYZ	xyz(18.0848, 14.9164, 61.5883)
Luminance	0.1492 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65D0 #D0AA3F

analogous

#3FADD0 #3F65D0 #613FD0

triadic

#3F65D0 #D03F65 #65D03F

tetradic

#3F65D0 #D03FAD #D0AA3F #3FD061

square

#3F65D0 #D03FAD #D0AA3F #3FD061

split-complementary

#3F65D0 #D0613F #ADD03F

monochromatic

#1D3577 #294BA9 #3F65D0 #708CDC #A1B4E8

Accessibility & contrast

On white

5.27

#3F65D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#3F65D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65D0

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65D0	#FFFFFF	#000000	##FFFFFF
##3F65D0	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2173D4

Deuteranopia (green-blind)

#0065CE

Tritanopia (blue-blind)

#007E91

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f65d0;
/* rgb */ color: rgb(63, 101, 208);
/* oklch */ color: oklch(53.8% 0.171 266.1);

Tailwind

colors: {
  custom: {
    50: '#8590df',
    500: '#3f65d0',
    950: '#000000',
  },
}

SCSS

$custom: #3f65d0;
$custom-light: #8590df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65d0",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 208
  },
  "hsl": {
    "h": 224.276,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.53841,
    "c": 0.17092,
    "h": 266.1
  },
  "luminance": 0.14918
}

Semantic roles & 50–950 ramp

primary

#3F65D0

secondary

#D5C496

accent

#BA44E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F65D0

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

Preview Lab → · Contrast checker → · Palette generator →