#3F49D7#3F49D7

#3F49D7 is a mid, highly saturated blue. Relative luminance 0.107; OKLCH L 49.2% C 0.213 H 272.5°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F49D7
RGB	rgb(63, 73, 215)
HSL	hsl(236, 66%, 55%)
HSV	hsv(236, 71%, 84%)
CMYK	cmyk(70.7%, 66%, 0%, 15.7%)
CIE-LAB	lab(39.12, 42.44, -73.78)
CIE-LCH	lch(39.12, 85.12, 299.91°)
OKLab	oklab(49.25% 0.0092 -0.2132)
OKLCH	oklch(49.25% 0.213 272.5)
XYZ	xyz(16.6941, 10.7265, 65.4674)
Luminance	0.1073 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F49D7 #D7CD3F

analogous

#3F95D7 #3F49D7 #813FD7

triadic

#3F49D7 #D73F49 #49D73F

tetradic

#3F49D7 #D73F95 #D7CD3F #3FD781

square

#3F49D7 #D73F95 #D7CD3F #3FD781

split-complementary

#3F49D7 #D7813F #95D73F

monochromatic

#1B2281 #252FB3 #3F49D7 #7279E2 #A4A9EC

Accessibility & contrast

On white

6.68

#3F49D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3F49D7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49D7

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49D7	#FFFFFF	#000000	##FFFFFF
##3F49D7	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063DB

Deuteranopia (green-blind)

#0055D4

Tritanopia (blue-blind)

#006F8A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f49d7;
/* rgb */ color: rgb(63, 73, 215);
/* oklch */ color: oklch(49.2% 0.213 272.5);

Tailwind

colors: {
  custom: {
    50: '#887ce4',
    500: '#3f49d7',
    950: '#000000',
  },
}

SCSS

$custom: #3f49d7;
$custom-light: #887ce4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49d7",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 215
  },
  "hsl": {
    "h": 236.053,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.49246,
    "c": 0.21343,
    "h": 272.5
  },
  "luminance": 0.10728
}

Semantic roles & 50–950 ramp

primary

#3F49D7

secondary

#D9D599

accent

#DD3FE8

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F49D7

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

Preview Lab → · Contrast checker → · Palette generator →