#3F65CE#3F65CE

#3F65CE is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.7% C 0.168 H 265.9°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#3F65CE
RGB	rgb(63, 101, 206)
HSL	hsl(224, 59%, 53%)
HSV	hsv(224, 69%, 81%)
CMYK	cmyk(69.4%, 51%, 0%, 19.2%)
CIE-LAB	lab(45.38, 21.69, -58.41)
CIE-LCH	lch(45.38, 62.30, 290.37°)
OKLab	oklab(53.7% -0.0119 -0.1678)
OKLCH	oklch(53.7% 0.168 265.9)
XYZ	xyz(17.8403, 14.8186, 60.3006)
Luminance	0.1482 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65CE #CEA83F

analogous

#3FACCE #3F65CE #603FCE

triadic

#3F65CE #CE3F65 #65CE3F

tetradic

#3F65CE #CE3FAC #CEA83F #3FCE60

square

#3F65CE #CE3FAC #CEA83F #3FCE60

split-complementary

#3F65CE #CE603F #ACCE3F

monochromatic

#1E3575 #2A4BA6 #3F65CE #708CDA #A1B3E7

Accessibility & contrast

On white

5.30

#3F65CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#3F65CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65CE

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65CE	#FFFFFF	#000000	##FFFFFF
##3F65CE	1.00	5.30	3.96	5.30
#FFFFFF	5.30	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2572D2

Deuteranopia (green-blind)

#0065CC

Tritanopia (blue-blind)

#007E90

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f65ce;
/* rgb */ color: rgb(63, 101, 206);
/* oklch */ color: oklch(53.7% 0.168 265.9);

Tailwind

colors: {
  custom: {
    50: '#8590de',
    500: '#3f65ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f65ce;
$custom-light: #8590de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65ce",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 206
  },
  "hsl": {
    "h": 224.056,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.53695,
    "c": 0.1682,
    "h": 265.9
  },
  "luminance": 0.1482
}

Semantic roles & 50–950 ramp

primary

#3F65CE

secondary

#D3C395

accent

#B945E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F65CE

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

Preview Lab → · Contrast checker → · Palette generator →