#3F73C2#3F73C2

#3F73C2 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.9% C 0.135 H 258.6°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F73C2
RGB	rgb(63, 115, 194)
HSL	hsl(216, 52%, 50%)
HSV	hsv(216, 68%, 76%)
CMYK	cmyk(67.5%, 40.7%, 0%, 23.9%)
CIE-LAB	lab(48.53, 8.55, -46.48)
CIE-LCH	lch(48.53, 47.26, 280.42°)
OKLab	oklab(55.87% -0.0268 -0.1325)
OKLCH	oklch(55.87% 0.135 258.6)
XYZ	xyz(17.9147, 17.2115, 53.4065)
Luminance	0.1721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F73C2 #C28E3F

analogous

#3FB5C2 #3F73C2 #4C3FC2

triadic

#3F73C2 #C23F73 #73C23F

tetradic

#3F73C2 #C23FB5 #C28E3F #3FC24C

square

#3F73C2 #C23FB5 #C28E3F #3FC24C

split-complementary

#3F73C2 #C24C3F #B5C23F

monochromatic

#203C66 #2F5795 #3F73C2 #6D95D1 #9CB7E0

Accessibility & contrast

On white

4.73

#3F73C2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3F73C2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F73C2

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F73C2	#FFFFFF	#000000	##FFFFFF
##3F73C2	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F7AC5

Deuteranopia (green-blind)

#3A6EC0

Tritanopia (blue-blind)

#008591

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f73c2;
/* rgb */ color: rgb(63, 115, 194);
/* oklch */ color: oklch(55.9% 0.135 258.6);

Tailwind

colors: {
  custom: {
    50: '#829ad5',
    500: '#3f73c2',
    950: '#000000',
  },
}

SCSS

$custom: #3f73c2;
$custom-light: #829ad5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f73c2",
  "rgb": {
    "r": 63,
    "g": 115,
    "b": 194
  },
  "hsl": {
    "h": 216.183,
    "s": 51.779,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55869,
    "c": 0.13517,
    "h": 258.6
  },
  "luminance": 0.17213
}

Semantic roles & 50–950 ramp

primary

#3F73C2

secondary

#CCB491

accent

#A34DDB

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #3F73C2

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

Preview Lab → · Contrast checker → · Palette generator →