#3F49DB#3F49DB

#3F49DB is a mid, highly saturated blue. Relative luminance 0.109; OKLCH L 49.6% C 0.218 H 272.3°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX#3F49DB
RGBrgb(63, 73, 219)
HSLhsl(236, 68%, 55%)
HSVhsv(236, 71%, 86%)
CMYKcmyk(71.2%, 66.7%, 0%, 14.1%)
CIE-LABlab(39.47, 43.80, -75.49)
CIE-LCHlch(39.47, 87.27, 300.12°)
OKLaboklab(49.61% 0.0089 -0.2182)
OKLCHoklch(49.61% 0.218 272.3)
XYZxyz(17.2143, 10.9346, 68.2075)
Luminance0.1094 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F49DB #DBD13F
analogous
#3F97DB #3F49DB #833FDB
triadic
#3F49DB #DB3F49 #49DB3F
tetradic
#3F49DB #DB3F97 #DBD13F #3FDB83
square
#3F49DB #DB3F97 #DBD13F #3FDB83
split-complementary
#3F49DB #DB833F #97DB3F
monochromatic
#192086 #232DBA #3F49DB #737AE5 #A6ABEE

Accessibility & contrast

On white

6.59
#3F49DB on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.19
#3F49DB on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49DB
6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F49DB#FFFFFF#000000##FFFFFF
##3F49DB1.006.593.196.59
#FFFFFF6.591.0021.001.00
#0000003.1921.001.0021.00
##FFFFFF6.591.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0064E0
Deuteranopia (green-blind)
#0056D8
Tritanopia (blue-blind)
#00708C
Achromatopsia (no color)
#5D5D5D

Design tokens & code

CSS
--color: #3f49db;
/* rgb */ color: rgb(63, 73, 219);
/* oklch */ color: oklch(49.6% 0.218 272.3);
Tailwind
colors: {
  custom: {
    50: '#897ce7',
    500: '#3f49db',
    950: '#000000',
  },
}
SCSS
$custom: #3f49db;
$custom-light: #897ce7;
$custom-dark: #000000;
JSON
{
  "hex": "#3f49db",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 219
  },
  "hsl": {
    "h": 236.154,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.49611,
    "c": 0.21842,
    "h": 272.3
  },
  "luminance": 0.10936
}

Semantic roles & 50–950 ramp

primary
#3F49DB
secondary
#DCD79A
accent
#E03DEB
background
#F9F7FE
surface
#F2EEFD
border
#CCC9D5
text
#0D0916
muted
#7E7B84

Preview Lab

Preview with #3F49DB

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

Preview Lab → · Contrast checker → · Palette generator →

#3F49DB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva