#3F65BF#3F65BF

#3F65BF is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.6% C 0.148 H 264.6°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#3F65BF
RGB	rgb(63, 101, 191)
HSL	hsl(222, 50%, 50%)
HSV	hsv(222, 67%, 75%)
CMYK	cmyk(67%, 47.1%, 0%, 25.1%)
CIE-LAB	lab(44.41, 16.29, -51.33)
CIE-LCH	lch(44.41, 53.85, 287.60°)
OKLab	oklab(52.64% -0.0138 -0.1469)
OKLCH	oklch(52.64% 0.148 264.6)
XYZ	xyz(16.1043, 14.1241, 51.1576)
Luminance	0.1413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65BF #BF993F

analogous

#3FA5BF #3F65BF #593FBF

triadic

#3F65BF #BF3F65 #65BF3F

tetradic

#3F65BF #BF3FA5 #BF993F #3FBF59

square

#3F65BF #BF3FA5 #BF993F #3FBF59

split-complementary

#3F65BF #BF593F #A5BF3F

monochromatic

#213463 #304D91 #3F65BF #6D8ACF #9BAFDE

Accessibility & contrast

On white

5.49

#3F65BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3F65BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65BF

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65BF	#FFFFFF	#000000	##FFFFFF
##3F65BF	1.00	5.49	3.83	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376FC2

Deuteranopia (green-blind)

#1C64BD

Tritanopia (blue-blind)

#007A89

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f65bf;
/* rgb */ color: rgb(63, 101, 191);
/* oklch */ color: oklch(52.6% 0.148 264.6);

Tailwind

colors: {
  custom: {
    50: '#8290d3',
    500: '#3f65bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f65bf;
$custom-light: #8290d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65bf",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 191
  },
  "hsl": {
    "h": 222.188,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.52641,
    "c": 0.1476,
    "h": 264.6
  },
  "luminance": 0.14126
}

Semantic roles & 50–950 ramp

primary

#3F65BF

secondary

#CAB990

accent

#B04EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F65BF

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

Preview Lab → · Contrast checker → · Palette generator →