#3F59C5#3F59C5

#3F59C5 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.6% C 0.171 H 269.2°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#3F59C5
RGB	rgb(63, 89, 197)
HSL	hsl(228, 54%, 51%)
HSV	hsv(228, 68%, 77%)
CMYK	cmyk(68%, 54.8%, 0%, 22.7%)
CIE-LAB	lab(41.58, 26.13, -59.37)
CIE-LCH	lch(41.58, 64.86, 293.75°)
OKLab	oklab(50.62% -0.0023 -0.1708)
OKLCH	oklch(50.62% 0.171 269.2)
XYZ	xyz(15.6969, 12.2312, 54.3461)
Luminance	0.1223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59C5 #C5AB3F

analogous

#3F9CC5 #3F59C5 #683FC5

triadic

#3F59C5 #C53F59 #59C53F

tetradic

#3F59C5 #C53F9C #C5AB3F #3FC568

square

#3F59C5 #C53F9C #C5AB3F #3FC568

split-complementary

#3F59C5 #C5683F #9CC53F

monochromatic

#202E6A #2E4399 #3F59C5 #6E82D3 #9DAAE1

Accessibility & contrast

On white

6.09

#3F59C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#3F59C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59C5

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59C5	#FFFFFF	#000000	##FFFFFF
##3F59C5	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068C9

Deuteranopia (green-blind)

#005CC3

Tritanopia (blue-blind)

#007386

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f59c5;
/* rgb */ color: rgb(63, 89, 197);
/* oklch */ color: oklch(50.6% 0.171 269.2);

Tailwind

colors: {
  custom: {
    50: '#8487d7',
    500: '#3f59c5',
    950: '#000000',
  },
}

SCSS

$custom: #3f59c5;
$custom-light: #8487d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59c5",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 197
  },
  "hsl": {
    "h": 228.358,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.50623,
    "c": 0.17082,
    "h": 269.2
  },
  "luminance": 0.12233
}

Semantic roles & 50–950 ramp

primary

#3F59C5

secondary

#CEC292

accent

#C14BDD

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F59C5

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

Preview Lab → · Contrast checker → · Palette generator →