#3F59BD#3F59BD

#3F59BD is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.0% C 0.160 H 269.0°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F59BD
RGB	rgb(63, 89, 189)
HSL	hsl(228, 50%, 49%)
HSV	hsv(228, 67%, 74%)
CMYK	cmyk(66.7%, 52.9%, 0%, 25.9%)
CIE-LAB	lab(41.02, 23.26, -55.63)
CIE-LCH	lch(41.02, 60.30, 292.69°)
OKLab	oklab(50.02% -0.0029 -0.1598)
OKLCH	oklch(50.02% 0.16 269)
XYZ	xyz(14.8044, 11.8743, 49.6460)
Luminance	0.1188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F59BD #BDA33F

analogous

#3F98BD #3F59BD #643FBD

triadic

#3F59BD #BD3F59 #59BD3F

tetradic

#3F59BD #BD3F98 #BDA33F #3FBD64

square

#3F59BD #BD3F98 #BDA33F #3FBD64

split-complementary

#3F59BD #BD643F #98BD3F

monochromatic

#202E61 #30438F #3F59BD #6B80CE #99A7DD

Accessibility & contrast

On white

6.22

#3F59BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#3F59BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F59BD

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F59BD	#FFFFFF	#000000	##FFFFFF
##3F59BD	1.00	6.22	3.38	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1767C1

Deuteranopia (green-blind)

#005BBB

Tritanopia (blue-blind)

#007182

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3f59bd;
/* rgb */ color: rgb(63, 89, 189);
/* oklch */ color: oklch(50.0% 0.160 269.0);

Tailwind

colors: {
  custom: {
    50: '#8287d2',
    500: '#3f59bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f59bd;
$custom-light: #8287d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f59bd",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 189
  },
  "hsl": {
    "h": 227.619,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.50018,
    "c": 0.15983,
    "h": 269
  },
  "luminance": 0.11876
}

Semantic roles & 50–950 ramp

primary

#3F59BD

secondary

#C9BD8F

accent

#BD4EDA

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #3F59BD

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

Preview Lab → · Contrast checker → · Palette generator →