#3F65D9#3F65D9

#3F65D9 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.5% C 0.183 H 266.6°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#3F65D9
RGB	rgb(63, 101, 217)
HSL	hsl(225, 67%, 55%)
HSV	hsv(225, 71%, 85%)
CMYK	cmyk(71%, 53.5%, 0%, 14.9%)
CIE-LAB	lab(46.14, 25.65, -63.47)
CIE-LCH	lch(46.14, 68.46, 292.01°)
OKLab	oklab(54.51% -0.0109 -0.1827)
OKLCH	oklch(54.51% 0.183 266.6)
XYZ	xyz(19.2236, 15.3719, 67.5861)
Luminance	0.1537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65D9 #D9B33F

analogous

#3FB2D9 #3F65D9 #663FD9

triadic

#3F65D9 #D93F65 #65D93F

tetradic

#3F65D9 #D93FB2 #D9B33F #3FD966

square

#3F65D9 #D93FB2 #D9B33F #3FD966

split-complementary

#3F65D9 #D9663F #B2D93F

monochromatic

#1A3484 #2448B7 #3F65D9 #728EE3 #A5B7ED

Accessibility & contrast

On white

5.15

#3F65D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#3F65D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65D9

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65D9	#FFFFFF	#000000	##FFFFFF
##3F65D9	1.00	5.15	4.07	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0875DD

Deuteranopia (green-blind)

#0067D7

Tritanopia (blue-blind)

#008195

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f65d9;
/* rgb */ color: rgb(63, 101, 217);
/* oklch */ color: oklch(54.5% 0.183 266.6);

Tailwind

colors: {
  custom: {
    50: '#8790e6',
    500: '#3f65d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f65d9;
$custom-light: #8790e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65d9",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 217
  },
  "hsl": {
    "h": 225.195,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.54507,
    "c": 0.18301,
    "h": 266.6
  },
  "luminance": 0.15374
}

Semantic roles & 50–950 ramp

primary

#3F65D9

secondary

#DACA9A

accent

#BF3EEA

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F65D9

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

Preview Lab → · Contrast checker → · Palette generator →