#3F53C0#3F53C0

#3F53C0 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 49.1% C 0.172 H 270.9°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F53C0
RGB	rgb(63, 83, 192)
HSL	hsl(231, 51%, 50%)
HSV	hsv(231, 67%, 75%)
CMYK	cmyk(67.2%, 56.8%, 0%, 24.7%)
CIE-LAB	lab(39.66, 28.19, -59.58)
CIE-LCH	lch(39.66, 65.91, 295.32°)
OKLab	oklab(49.07% 0.0026 -0.1715)
OKLCH	oklch(49.07% 0.172 270.9)
XYZ	xyz(14.6544, 11.0477, 51.2191)
Luminance	0.1105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53C0 #C0AC3F

analogous

#3F93C0 #3F53C0 #6C3FC0

triadic

#3F53C0 #C03F53 #53C03F

tetradic

#3F53C0 #C03F93 #C0AC3F #3FC06C

square

#3F53C0 #C03F93 #C0AC3F #3FC06C

split-complementary

#3F53C0 #C06C3F #93C03F

monochromatic

#212B64 #303F92 #3F53C0 #6D7CCF #9BA6DE

Accessibility & contrast

On white

6.54

#3F53C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3F53C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53C0

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53C0	#FFFFFF	#000000	##FFFFFF
##3F53C0	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C4

Deuteranopia (green-blind)

#0058BE

Tritanopia (blue-blind)

#006D81

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f53c0;
/* rgb */ color: rgb(63, 83, 192);
/* oklch */ color: oklch(49.1% 0.172 270.9);

Tailwind

colors: {
  custom: {
    50: '#8383d4',
    500: '#3f53c0',
    950: '#000000',
  },
}

SCSS

$custom: #3f53c0;
$custom-light: #8383d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53c0",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 192
  },
  "hsl": {
    "h": 230.698,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.49068,
    "c": 0.17151,
    "h": 270.9
  },
  "luminance": 0.11049
}

Semantic roles & 50–950 ramp

primary

#3F53C0

secondary

#CAC191

accent

#C44EDA

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F53C0

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

Preview Lab → · Contrast checker → · Palette generator →