#3F53C5#3F53C5

#3F53C5 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.5% C 0.178 H 270.9°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#3F53C5
RGB	rgb(63, 83, 197)
HSL	hsl(231, 54%, 51%)
HSV	hsv(231, 68%, 77%)
CMYK	cmyk(68%, 57.9%, 0%, 22.7%)
CIE-LAB	lab(40.04, 29.97, -61.88)
CIE-LCH	lch(40.04, 68.75, 295.84°)
OKLab	oklab(49.47% 0.0027 -0.1782)
OKLCH	oklch(49.47% 0.178 270.9)
XYZ	xyz(15.2178, 11.2730, 54.1864)
Luminance	0.1127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53C5 #C5B13F

analogous

#3F96C5 #3F53C5 #6E3FC5

triadic

#3F53C5 #C53F53 #53C53F

tetradic

#3F53C5 #C53F96 #C5B13F #3FC56E

square

#3F53C5 #C53F96 #C5B13F #3FC56E

split-complementary

#3F53C5 #C56E3F #96C53F

monochromatic

#202B6A #2E3E99 #3F53C5 #6E7DD3 #9DA7E1

Accessibility & contrast

On white

6.45

#3F53C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#3F53C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53C5

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53C5	#FFFFFF	#000000	##FFFFFF
##3F53C5	1.00	6.45	3.25	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065C9

Deuteranopia (green-blind)

#0058C3

Tritanopia (blue-blind)

#006F84

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3f53c5;
/* rgb */ color: rgb(63, 83, 197);
/* oklch */ color: oklch(49.5% 0.178 270.9);

Tailwind

colors: {
  custom: {
    50: '#8483d7',
    500: '#3f53c5',
    950: '#000000',
  },
}

SCSS

$custom: #3f53c5;
$custom-light: #8483d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53c5",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 197
  },
  "hsl": {
    "h": 231.045,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.49467,
    "c": 0.17827,
    "h": 270.9
  },
  "luminance": 0.11274
}

Semantic roles & 50–950 ramp

primary

#3F53C5

secondary

#CEC592

accent

#C74BDD

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F53C5

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

Preview Lab → · Contrast checker → · Palette generator →