#3F63D9#3F63D9

#3F63D9 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.1% C 0.185 H 267.1°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3F63D9
RGB	rgb(63, 99, 217)
HSL	hsl(226, 67%, 55%)
HSV	hsv(226, 71%, 85%)
CMYK	cmyk(71%, 54.4%, 0%, 14.9%)
CIE-LAB	lab(45.62, 26.92, -64.31)
CIE-LCH	lch(45.62, 69.72, 292.71°)
OKLab	oklab(54.11% -0.0093 -0.1852)
OKLCH	oklch(54.11% 0.185 267.1)
XYZ	xyz(19.0318, 14.9882, 67.5222)
Luminance	0.1499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63D9 #D9B53F

analogous

#3FB0D9 #3F63D9 #683FD9

triadic

#3F63D9 #D93F63 #63D93F

tetradic

#3F63D9 #D93FB0 #D9B53F #3FD968

square

#3F63D9 #D93FB0 #D9B53F #3FD968

split-complementary

#3F63D9 #D9683F #B0D93F

monochromatic

#1A3384 #2446B7 #3F63D9 #728DE3 #A5B6ED

Accessibility & contrast

On white

5.25

#3F63D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#3F63D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63D9

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63D9	#FFFFFF	#000000	##FFFFFF
##3F63D9	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073DD

Deuteranopia (green-blind)

#0065D7

Tritanopia (blue-blind)

#008094

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f63d9;
/* rgb */ color: rgb(63, 99, 217);
/* oklch */ color: oklch(54.1% 0.185 267.1);

Tailwind

colors: {
  custom: {
    50: '#878ee6',
    500: '#3f63d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f63d9;
$custom-light: #878ee6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63d9",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 217
  },
  "hsl": {
    "h": 225.974,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.54114,
    "c": 0.18544,
    "h": 267.1
  },
  "luminance": 0.1499
}

Semantic roles & 50–950 ramp

primary

#3F63D9

secondary

#DACB9A

accent

#C23EEA

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F63D9

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

Preview Lab → · Contrast checker → · Palette generator →