#3F65D8#3F65D8

#3F65D8 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 54.4% C 0.182 H 266.5°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#3F65D8
RGB	rgb(63, 101, 216)
HSL	hsl(225, 66%, 55%)
HSV	hsv(225, 71%, 85%)
CMYK	cmyk(70.8%, 53.2%, 0%, 15.3%)
CIE-LAB	lab(46.07, 25.29, -63.01)
CIE-LCH	lch(46.07, 67.90, 291.87°)
OKLab	oklab(54.43% -0.011 -0.1813)
OKLCH	oklch(54.43% 0.182 266.5)
XYZ	xyz(19.0939, 15.3200, 66.9032)
Luminance	0.1532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65D8 #D8B23F

analogous

#3FB2D8 #3F65D8 #663FD8

triadic

#3F65D8 #D83F65 #65D83F

tetradic

#3F65D8 #D83FB2 #D8B23F #3FD866

square

#3F65D8 #D83FB2 #D8B23F #3FD866

split-complementary

#3F65D8 #D8663F #B2D83F

monochromatic

#1A3482 #2549B5 #3F65D8 #728EE2 #A5B7ED

Accessibility & contrast

On white

5.17

#3F65D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#3F65D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65D8

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65D8	#FFFFFF	#000000	##FFFFFF
##3F65D8	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D74DC

Deuteranopia (green-blind)

#0066D6

Tritanopia (blue-blind)

#008195

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f65d8;
/* rgb */ color: rgb(63, 101, 216);
/* oklch */ color: oklch(54.4% 0.182 266.5);

Tailwind

colors: {
  custom: {
    50: '#8790e5',
    500: '#3f65d8',
    950: '#000000',
  },
}

SCSS

$custom: #3f65d8;
$custom-light: #8790e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65d8",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 216
  },
  "hsl": {
    "h": 225.098,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.54432,
    "c": 0.18167,
    "h": 266.5
  },
  "luminance": 0.15322
}

Semantic roles & 50–950 ramp

primary

#3F65D8

secondary

#DACA99

accent

#BF3FE9

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F65D8

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

Preview Lab → · Contrast checker → · Palette generator →