#3F48D8#3F48D8

#3F48D8 is a mid, highly saturated blue. Relative luminance 0.106; OKLCH L 49.2% C 0.216 H 272.6°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F48D8
RGB	rgb(63, 72, 216)
HSL	hsl(236, 66%, 55%)
HSV	hsv(236, 71%, 85%)
CMYK	cmyk(70.8%, 66.7%, 0%, 15.3%)
CIE-LAB	lab(38.98, 43.38, -74.57)
CIE-LCH	lch(38.98, 86.27, 300.19°)
OKLab	oklab(49.18% 0.0098 -0.2156)
OKLCH	oklch(49.18% 0.216 272.6)
XYZ	xyz(16.7578, 10.6477, 66.1245)
Luminance	0.1065 (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

#3F48D8 #D8CF3F

analogous

#3F94D8 #3F48D8 #833FD8

triadic

#3F48D8 #D83F48 #48D83F

tetradic

#3F48D8 #D83F94 #D8CF3F #3FD883

square

#3F48D8 #D83F94 #D8CF3F #3FD883

split-complementary

#3F48D8 #D8833F #94D83F

monochromatic

#1A2182 #252DB5 #3F48D8 #7278E2 #A5A9ED

Accessibility & contrast

On white

6.71

#3F48D8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F48D8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F48D8

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48D8	#FFFFFF	#000000	##FFFFFF
##3F48D8	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063DC

Deuteranopia (green-blind)

#0055D5

Tritanopia (blue-blind)

#006F8A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f48d8;
/* rgb */ color: rgb(63, 72, 216);
/* oklch */ color: oklch(49.2% 0.216 272.6);

Tailwind

colors: {
  custom: {
    50: '#897be5',
    500: '#3f48d8',
    950: '#000000',
  },
}

SCSS

$custom: #3f48d8;
$custom-light: #897be5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48d8",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 216
  },
  "hsl": {
    "h": 236.471,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.49175,
    "c": 0.21578,
    "h": 272.6
  },
  "luminance": 0.10649
}

Semantic roles & 50–950 ramp

primary

#3F48D8

secondary

#DAD699

accent

#DF3FE9

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F48D8

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

Preview Lab → · Contrast checker → · Palette generator →