#3F50D2#3F50D2

#3F50D2 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 50.0% C 0.199 H 271.4°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F50D2
RGB	rgb(63, 80, 210)
HSL	hsl(233, 62%, 54%)
HSV	hsv(233, 70%, 82%)
CMYK	cmyk(70%, 61.9%, 0%, 17.6%)
CIE-LAB	lab(40.32, 36.43, -68.93)
CIE-LCH	lch(40.32, 77.96, 297.86°)
OKLab	oklab(50% 0.0048 -0.199)
OKLCH	oklch(50% 0.199 271.4)
XYZ	xyz(16.5475, 11.4456, 62.2974)
Luminance	0.1145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F50D2 #D2C13F

analogous

#3F99D2 #3F50D2 #773FD2

triadic

#3F50D2 #D23F50 #50D23F

tetradic

#3F50D2 #D23F99 #D2C13F #3FD277

square

#3F50D2 #D23F99 #D2C13F #3FD277

split-complementary

#3F50D2 #D2773F #99D23F

monochromatic

#1D277A #2837AC #3F50D2 #717DDE #A2AAE9

Accessibility & contrast

On white

6.38

#3F50D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3F50D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F50D2

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F50D2	#FFFFFF	#000000	##FFFFFF
##3F50D2	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D6

Deuteranopia (green-blind)

#0058CF

Tritanopia (blue-blind)

#007189

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f50d2;
/* rgb */ color: rgb(63, 80, 210);
/* oklch */ color: oklch(50.0% 0.199 271.4);

Tailwind

colors: {
  custom: {
    50: '#8781e1',
    500: '#3f50d2',
    950: '#000000',
  },
}

SCSS

$custom: #3f50d2;
$custom-light: #8781e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f50d2",
  "rgb": {
    "r": 63,
    "g": 80,
    "b": 210
  },
  "hsl": {
    "h": 233.061,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.49998,
    "c": 0.19905,
    "h": 271.4
  },
  "luminance": 0.11447
}

Semantic roles & 50–950 ramp

primary

#3F50D2

secondary

#D6CF97

accent

#D243E5

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #3F50D2

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

Preview Lab → · Contrast checker → · Palette generator →