#3F56CF#3F56CF

#3F56CF is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.8% C 0.188 H 270.1°. Best body text is #FFFFFF at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F56CF
RGB	rgb(63, 86, 207)
HSL	hsl(230, 60%, 53%)
HSV	hsv(230, 70%, 81%)
CMYK	cmyk(69.6%, 58.5%, 0%, 18.8%)
CIE-LAB	lab(41.56, 31.60, -65.19)
CIE-LCH	lch(41.56, 72.44, 295.86°)
OKLab	oklab(50.84% 0.0004 -0.1879)
OKLCH	oklch(50.84% 0.188 270.1)
XYZ	xyz(16.6363, 12.2157, 60.5005)
Luminance	0.1222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F56CF #CFB83F

analogous

#3F9ECF #3F56CF #703FCF

triadic

#3F56CF #CF3F56 #56CF3F

tetradic

#3F56CF #CF3F9E #CFB83F #3FCF70

square

#3F56CF #CF3F9E #CFB83F #3FCF70

split-complementary

#3F56CF #CF703F #9ECF3F

monochromatic

#1E2C76 #2A3EA7 #3F56CF #7081DB #A1ACE7

Accessibility & contrast

On white

6.10

#3F56CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#3F56CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F56CF

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F56CF	#FFFFFF	#000000	##FFFFFF
##3F56CF	1.00	6.10	3.44	6.10
#FFFFFF	6.10	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D3

Deuteranopia (green-blind)

#005CCD

Tritanopia (blue-blind)

#00748A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f56cf;
/* rgb */ color: rgb(63, 86, 207);
/* oklch */ color: oklch(50.8% 0.188 270.1);

Tailwind

colors: {
  custom: {
    50: '#8685df',
    500: '#3f56cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f56cf;
$custom-light: #8685df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f56cf",
  "rgb": {
    "r": 63,
    "g": 86,
    "b": 207
  },
  "hsl": {
    "h": 230.417,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.50839,
    "c": 0.18794,
    "h": 270.1
  },
  "luminance": 0.12217
}

Semantic roles & 50–950 ramp

primary

#3F56CF

secondary

#D4CA96

accent

#CA45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #3F56CF

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

Preview Lab → · Contrast checker → · Palette generator →