#3F63C6#3F63C6

#3F63C6 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.7% C 0.160 H 266.0°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F63C6
RGB	rgb(63, 99, 198)
HSL	hsl(224, 54%, 51%)
HSV	hsv(224, 68%, 78%)
CMYK	cmyk(68.2%, 50%, 0%, 22.4%)
CIE-LAB	lab(44.31, 20.08, -55.53)
CIE-LCH	lch(44.31, 59.05, 289.88°)
OKLab	oklab(52.71% -0.011 -0.1594)
OKLCH	oklch(52.71% 0.16 266)
XYZ	xyz(16.7012, 14.0560, 55.2480)
Luminance	0.1406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63C6 #C6A23F

analogous

#3FA6C6 #3F63C6 #5E3FC6

triadic

#3F63C6 #C63F63 #63C63F

tetradic

#3F63C6 #C63FA6 #C6A23F #3FC65E

square

#3F63C6 #C63FA6 #C6A23F #3FC65E

split-complementary

#3F63C6 #C65E3F #A6C63F

monochromatic

#20346B #2E4B9A #3F63C6 #6E89D4 #9DB0E2

Accessibility & contrast

On white

5.51

#3F63C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3F63C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63C6

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63C6	#FFFFFF	#000000	##FFFFFF
##3F63C6	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A6FCA

Deuteranopia (green-blind)

#0063C4

Tritanopia (blue-blind)

#007A8B

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3f63c6;
/* rgb */ color: rgb(63, 99, 198);
/* oklch */ color: oklch(52.7% 0.160 266.0);

Tailwind

colors: {
  custom: {
    50: '#838ed8',
    500: '#3f63c6',
    950: '#000000',
  },
}

SCSS

$custom: #3f63c6;
$custom-light: #838ed8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63c6",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 198
  },
  "hsl": {
    "h": 224,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.52711,
    "c": 0.15974,
    "h": 266
  },
  "luminance": 0.14058
}

Semantic roles & 50–950 ramp

primary

#3F63C6

secondary

#CEBE93

accent

#B64ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F63C6

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

Preview Lab → · Contrast checker → · Palette generator →