#3F52D9#3F52D9

#3F52D9 is a mid, highly saturated blue. Relative luminance 0.121; OKLCH L 51.0% C 0.206 H 270.9°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#3F52D9
RGB	rgb(63, 82, 217)
HSL	hsl(233, 67%, 55%)
HSV	hsv(233, 71%, 85%)
CMYK	cmyk(71%, 62.2%, 0%, 14.9%)
CIE-LAB	lab(41.37, 37.62, -71.23)
CIE-LCH	lch(41.37, 80.55, 297.84°)
OKLab	oklab(50.95% 0.0032 -0.2057)
OKLCH	oklch(50.95% 0.206 270.9)
XYZ	xyz(17.5873, 12.0993, 67.0407)
Luminance	0.1210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52D9 #D9C63F

analogous

#3F9FD9 #3F52D9 #793FD9

triadic

#3F52D9 #D93F52 #52D93F

tetradic

#3F52D9 #D93F9F #D9C63F #3FD979

square

#3F52D9 #D93F9F #D9C63F #3FD979

split-complementary

#3F52D9 #D9793F #9FD93F

monochromatic

#1A2784 #2436B7 #3F52D9 #7280E3 #A5AEED

Accessibility & contrast

On white

6.14

#3F52D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#3F52D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52D9

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52D9	#FFFFFF	#000000	##FFFFFF
##3F52D9	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069DD

Deuteranopia (green-blind)

#005BD6

Tritanopia (blue-blind)

#00758E

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f52d9;
/* rgb */ color: rgb(63, 82, 217);
/* oklch */ color: oklch(51.0% 0.206 270.9);

Tailwind

colors: {
  custom: {
    50: '#8882e6',
    500: '#3f52d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f52d9;
$custom-light: #8882e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52d9",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 217
  },
  "hsl": {
    "h": 232.597,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.50951,
    "c": 0.20573,
    "h": 270.9
  },
  "luminance": 0.12101
}

Semantic roles & 50–950 ramp

primary

#3F52D9

secondary

#DAD29A

accent

#D53EEA

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F52D9

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

Preview Lab → · Contrast checker → · Palette generator →