#3F53C6#3F53C6

#3F53C6 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.5% C 0.180 H 270.9°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#3F53C6
RGB	rgb(63, 83, 198)
HSL	hsl(231, 54%, 51%)
HSV	hsv(231, 68%, 78%)
CMYK	cmyk(68.2%, 58.1%, 0%, 22.4%)
CIE-LAB	lab(40.11, 30.32, -62.33)
CIE-LCH	lch(40.11, 69.32, 295.94°)
OKLab	oklab(49.55% 0.0027 -0.1796)
OKLCH	oklch(49.55% 0.18 270.9)
XYZ	xyz(15.3327, 11.3190, 54.7919)
Luminance	0.1132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53C6 #C6B23F

analogous

#3F96C6 #3F53C6 #6E3FC6

triadic

#3F53C6 #C63F53 #53C63F

tetradic

#3F53C6 #C63F96 #C6B23F #3FC66E

square

#3F53C6 #C63F96 #C6B23F #3FC66E

split-complementary

#3F53C6 #C66E3F #96C63F

monochromatic

#202B6B #2E3E9A #3F53C6 #6E7DD4 #9DA8E2

Accessibility & contrast

On white

6.43

#3F53C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#3F53C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53C6

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53C6	#FFFFFF	#000000	##FFFFFF
##3F53C6	1.00	6.43	3.26	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065CA

Deuteranopia (green-blind)

#0059C4

Tritanopia (blue-blind)

#006F84

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f53c6;
/* rgb */ color: rgb(63, 83, 198);
/* oklch */ color: oklch(49.5% 0.180 270.9);

Tailwind

colors: {
  custom: {
    50: '#8483d8',
    500: '#3f53c6',
    950: '#000000',
  },
}

SCSS

$custom: #3f53c6;
$custom-light: #8483d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53c6",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 198
  },
  "hsl": {
    "h": 231.111,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.49548,
    "c": 0.17961,
    "h": 270.9
  },
  "luminance": 0.1132
}

Semantic roles & 50–950 ramp

primary

#3F53C6

secondary

#CEC593

accent

#C84ADE

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F53C6

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

Preview Lab → · Contrast checker → · Palette generator →