#3F63D2#3F63D2

#3F63D2 is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.6% C 0.176 H 266.8°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#3F63D2
RGB	rgb(63, 99, 210)
HSL	hsl(225, 62%, 54%)
HSV	hsv(225, 70%, 82%)
CMYK	cmyk(70%, 52.9%, 0%, 17.6%)
CIE-LAB	lab(45.13, 24.41, -61.12)
CIE-LCH	lch(45.13, 65.81, 291.77°)
OKLab	oklab(53.59% -0.0099 -0.1758)
OKLCH	oklch(53.59% 0.176 266.8)
XYZ	xyz(18.1406, 14.6317, 62.8285)
Luminance	0.1463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63D2 #D2AE3F

analogous

#3FACD2 #3F63D2 #643FD2

triadic

#3F63D2 #D23F63 #63D23F

tetradic

#3F63D2 #D23FAC #D2AE3F #3FD264

square

#3F63D2 #D23FAC #D2AE3F #3FD264

split-complementary

#3F63D2 #D2643F #ACD23F

monochromatic

#1D337A #2848AC #3F63D2 #718BDE #A2B4E9

Accessibility & contrast

On white

5.35

#3F63D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#3F63D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63D2

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63D2	#FFFFFF	#000000	##FFFFFF
##3F63D2	1.00	5.35	3.93	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1472D6

Deuteranopia (green-blind)

#0064D0

Tritanopia (blue-blind)

#007E91

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f63d2;
/* rgb */ color: rgb(63, 99, 210);
/* oklch */ color: oklch(53.6% 0.176 266.8);

Tailwind

colors: {
  custom: {
    50: '#868ee1',
    500: '#3f63d2',
    950: '#000000',
  },
}

SCSS

$custom: #3f63d2;
$custom-light: #868ee1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63d2",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 210
  },
  "hsl": {
    "h": 225.306,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.53586,
    "c": 0.17607,
    "h": 266.8
  },
  "luminance": 0.14634
}

Semantic roles & 50–950 ramp

primary

#3F63D2

secondary

#D6C697

accent

#BD43E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F63D2

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

Preview Lab → · Contrast checker → · Palette generator →