#3F53C3#3F53C3

#3F53C3 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.3% C 0.176 H 270.9°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#3F53C3
RGB	rgb(63, 83, 195)
HSL	hsl(231, 52%, 51%)
HSV	hsv(231, 68%, 76%)
CMYK	cmyk(67.7%, 57.4%, 0%, 23.5%)
CIE-LAB	lab(39.89, 29.26, -60.96)
CIE-LCH	lch(39.89, 67.62, 295.64°)
OKLab	oklab(49.31% 0.0026 -0.1756)
OKLCH	oklch(49.31% 0.176 270.9)
XYZ	xyz(14.9901, 11.1820, 52.9875)
Luminance	0.1118 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53C3 #C3AF3F

analogous

#3F95C3 #3F53C3 #6D3FC3

triadic

#3F53C3 #C33F53 #53C33F

tetradic

#3F53C3 #C33F95 #C3AF3F #3FC36D

square

#3F53C3 #C33F95 #C3AF3F #3FC36D

split-complementary

#3F53C3 #C36D3F #95C33F

monochromatic

#202B67 #2F3E96 #3F53C3 #6E7DD2 #9CA7E0

Accessibility & contrast

On white

6.49

#3F53C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#3F53C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53C3

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53C3	#FFFFFF	#000000	##FFFFFF
##3F53C3	1.00	6.49	3.24	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C7

Deuteranopia (green-blind)

#0058C1

Tritanopia (blue-blind)

#006E83

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f53c3;
/* rgb */ color: rgb(63, 83, 195);
/* oklch */ color: oklch(49.3% 0.176 270.9);

Tailwind

colors: {
  custom: {
    50: '#8483d6',
    500: '#3f53c3',
    950: '#000000',
  },
}

SCSS

$custom: #3f53c3;
$custom-light: #8483d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53c3",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 195
  },
  "hsl": {
    "h": 230.909,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.49307,
    "c": 0.17557,
    "h": 270.9
  },
  "luminance": 0.11183
}

Semantic roles & 50–950 ramp

primary

#3F53C3

secondary

#CCC392

accent

#C64CDC

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F53C3

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

Preview Lab → · Contrast checker → · Palette generator →