#3F43D0#3F43D0

#3F43D0 is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.6% C 0.211 H 273.7°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX#3F43D0
RGBrgb(63, 67, 208)
HSLhsl(238, 61%, 53%)
HSVhsv(238, 70%, 82%)
CMYKcmyk(69.7%, 67.8%, 0%, 18.4%)
CIE-LABlab(37.16, 43.68, -72.96)
CIE-LCHlch(37.16, 85.03, 300.91°)
OKLaboklab(47.64% 0.0137 -0.2108)
OKLCHoklch(47.64% 0.211 273.7)
XYZxyz(15.4384, 9.6237, 60.7062)
Luminance0.0963 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F43D0 #D0CC3F
analogous
#3F8BD0 #3F43D0 #833FD0
triadic
#3F43D0 #D03F43 #43D03F
tetradic
#3F43D0 #D03F8B #D0CC3F #3FD083
square
#3F43D0 #D03F8B #D0CC3F #3FD083
split-complementary
#3F43D0 #D0833F #8BD03F
monochromatic
#1D2077 #292DA9 #3F43D0 #7073DC #A1A3E8

Accessibility & contrast

On white

7.18
#3F43D0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.93
#3F43D0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43D0
7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F43D0#FFFFFF#000000##FFFFFF
##3F43D01.007.182.937.18
#FFFFFF7.181.0021.001.00
#0000002.9321.001.0021.00
##FFFFFF7.181.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005ED4
Deuteranopia (green-blind)
#0051CD
Tritanopia (blue-blind)
#006984
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #3f43d0;
/* rgb */ color: rgb(63, 67, 208);
/* oklch */ color: oklch(47.6% 0.211 273.7);
Tailwind
colors: {
  custom: {
    50: '#8778e0',
    500: '#3f43d0',
    950: '#000000',
  },
}
SCSS
$custom: #3f43d0;
$custom-light: #8778e0;
$custom-dark: #000000;
JSON
{
  "hex": "#3f43d0",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 208
  },
  "hsl": {
    "h": 238.345,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.47636,
    "c": 0.21129,
    "h": 273.7
  },
  "luminance": 0.09625
}

Semantic roles & 50–950 ramp

primary
#3F43D0
secondary
#D5D396
accent
#DF44E4
background
#F9F7FD
surface
#F1EDFB
border
#CBC8D4
text
#0D0915
muted
#7E7B83

Preview Lab

Preview with #3F43D0

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

Preview Lab → · Contrast checker → · Palette generator →

#3F43D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva