#3F56C3#3F56C3

#3F56C3 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.9% C 0.172 H 270.0°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#3F56C3
RGB	rgb(63, 86, 195)
HSL	hsl(230, 52%, 51%)
HSV	hsv(230, 68%, 76%)
CMYK	cmyk(67.7%, 55.9%, 0%, 23.5%)
CIE-LAB	lab(40.66, 27.34, -59.71)
CIE-LCH	lch(40.66, 65.67, 294.60°)
OKLab	oklab(49.88% 0.0001 -0.1718)
OKLCH	oklch(49.88% 0.172 270)
XYZ	xyz(15.2247, 11.6510, 53.0657)
Luminance	0.1165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F56C3 #C3AC3F

analogous

#3F98C3 #3F56C3 #6A3FC3

triadic

#3F56C3 #C33F56 #56C33F

tetradic

#3F56C3 #C33F98 #C3AC3F #3FC36A

square

#3F56C3 #C33F98 #C3AC3F #3FC36A

split-complementary

#3F56C3 #C36A3F #98C33F

monochromatic

#202D67 #2F4196 #3F56C3 #6E7FD2 #9CA8E0

Accessibility & contrast

On white

6.31

#3F56C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#3F56C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F56C3

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F56C3	#FFFFFF	#000000	##FFFFFF
##3F56C3	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066C7

Deuteranopia (green-blind)

#005AC1

Tritanopia (blue-blind)

#007084

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #3f56c3;
/* rgb */ color: rgb(63, 86, 195);
/* oklch */ color: oklch(49.9% 0.172 270.0);

Tailwind

colors: {
  custom: {
    50: '#8385d6',
    500: '#3f56c3',
    950: '#000000',
  },
}

SCSS

$custom: #3f56c3;
$custom-light: #8385d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f56c3",
  "rgb": {
    "r": 63,
    "g": 86,
    "b": 195
  },
  "hsl": {
    "h": 229.545,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.49883,
    "c": 0.17183,
    "h": 270
  },
  "luminance": 0.11652
}

Semantic roles & 50–950 ramp

primary

#3F56C3

secondary

#CCC292

accent

#C34CDC

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #3F56C3

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

Preview Lab → · Contrast checker → · Palette generator →