#3F53C1#3F53C1

#3F53C1 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.1% C 0.173 H 270.9°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F53C1
RGB	rgb(63, 83, 193)
HSL	hsl(231, 51%, 50%)
HSV	hsv(231, 67%, 76%)
CMYK	cmyk(67.4%, 57%, 0%, 24.3%)
CIE-LAB	lab(39.74, 28.55, -60.04)
CIE-LCH	lch(39.74, 66.48, 295.43°)
OKLab	oklab(49.15% 0.0026 -0.1728)
OKLCH	oklch(49.15% 0.173 270.9)
XYZ	xyz(14.7655, 11.0921, 51.8046)
Luminance	0.1109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53C1 #C1AD3F

analogous

#3F94C1 #3F53C1 #6C3FC1

triadic

#3F53C1 #C13F53 #53C13F

tetradic

#3F53C1 #C13F94 #C1AD3F #3FC16C

square

#3F53C1 #C13F94 #C1AD3F #3FC16C

split-complementary

#3F53C1 #C16C3F #94C13F

monochromatic

#212B65 #303F93 #3F53C1 #6D7CD0 #9CA6DF

Accessibility & contrast

On white

6.52

#3F53C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3F53C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53C1

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53C1	#FFFFFF	#000000	##FFFFFF
##3F53C1	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C5

Deuteranopia (green-blind)

#0058BF

Tritanopia (blue-blind)

#006E82

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f53c1;
/* rgb */ color: rgb(63, 83, 193);
/* oklch */ color: oklch(49.1% 0.173 270.9);

Tailwind

colors: {
  custom: {
    50: '#8383d5',
    500: '#3f53c1',
    950: '#000000',
  },
}

SCSS

$custom: #3f53c1;
$custom-light: #8383d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53c1",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 193
  },
  "hsl": {
    "h": 230.769,
    "s": 51.181,
    "l": 50.196
  },
  "oklch": {
    "l": 0.49147,
    "c": 0.17286,
    "h": 270.9
  },
  "luminance": 0.11094
}

Semantic roles & 50–950 ramp

primary

#3F53C1

secondary

#CBC291

accent

#C54DDB

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F53C1

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

Preview Lab → · Contrast checker → · Palette generator →