#3F48D9#3F48D9

#3F48D9 is a mid, highly saturated blue. Relative luminance 0.107; OKLCH L 49.3% C 0.217 H 272.5°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX#3F48D9
RGBrgb(63, 72, 217)
HSLhsl(236, 67%, 55%)
HSVhsv(236, 71%, 85%)
CMYKcmyk(71%, 66.8%, 0%, 14.9%)
CIE-LABlab(39.07, 43.72, -75.00)
CIE-LCHlch(39.07, 86.81, 300.24°)
OKLaboklab(49.27% 0.0097 -0.2168)
OKLCHoklch(49.27% 0.217 272.5)
XYZxyz(16.8874, 10.6996, 66.8074)
Luminance0.1070 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F48D9 #D9D03F
analogous
#3F95D9 #3F48D9 #833FD9
triadic
#3F48D9 #D93F48 #48D93F
tetradic
#3F48D9 #D93F95 #D9D03F #3FD983
square
#3F48D9 #D93F95 #D9D03F #3FD983
split-complementary
#3F48D9 #D9833F #95D93F
monochromatic
#1A2084 #242DB7 #3F48D9 #7279E3 #A5A9ED

Accessibility & contrast

On white

6.69
#3F48D9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.14
#3F48D9 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F48D9
6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F48D9#FFFFFF#000000##FFFFFF
##3F48D91.006.693.146.69
#FFFFFF6.691.0021.001.00
#0000003.1421.001.0021.00
##FFFFFF6.691.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0063DD
Deuteranopia (green-blind)
#0055D6
Tritanopia (blue-blind)
#006F8A
Achromatopsia (no color)
#5C5C5C

Design tokens & code

CSS
--color: #3f48d9;
/* rgb */ color: rgb(63, 72, 217);
/* oklch */ color: oklch(49.3% 0.217 272.5);
Tailwind
colors: {
  custom: {
    50: '#897be6',
    500: '#3f48d9',
    950: '#000000',
  },
}
SCSS
$custom: #3f48d9;
$custom-light: #897be6;
$custom-dark: #000000;
JSON
{
  "hex": "#3f48d9",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 217
  },
  "hsl": {
    "h": 236.494,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.49267,
    "c": 0.21702,
    "h": 272.5
  },
  "luminance": 0.10701
}

Semantic roles & 50–950 ramp

primary
#3F48D9
secondary
#DAD79A
accent
#E03EEA
background
#F9F7FE
surface
#F2EEFC
border
#CCC9D5
text
#0D0916
muted
#7E7B84

Preview Lab

Preview with #3F48D9

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

Preview Lab → · Contrast checker → · Palette generator →

#3F48D9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva