#3F45D0#3F45D0

#3F45D0 is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 48.0% C 0.209 H 273.4°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX#3F45D0
RGBrgb(63, 69, 208)
HSLhsl(238, 61%, 53%)
HSVhsv(238, 70%, 82%)
CMYKcmyk(69.7%, 66.8%, 0%, 18.4%)
CIE-LABlab(37.60, 42.48, -72.23)
CIE-LCHlch(37.60, 83.80, 300.46°)
OKLaboklab(47.96% 0.0124 -0.2087)
OKLCHoklch(47.96% 0.209 273.4)
XYZxyz(15.5594, 9.8656, 60.7465)
Luminance0.0987 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F45D0 #D0CA3F
analogous
#3F8DD0 #3F45D0 #813FD0
triadic
#3F45D0 #D03F45 #45D03F
tetradic
#3F45D0 #D03F8D #D0CA3F #3FD081
square
#3F45D0 #D03F8D #D0CA3F #3FD081
split-complementary
#3F45D0 #D0813F #8DD03F
monochromatic
#1D2177 #292FA9 #3F45D0 #7075DC #A1A4E8

Accessibility & contrast

On white

7.06
#3F45D0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.97
#3F45D0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F45D0
7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F45D0#FFFFFF#000000##FFFFFF
##3F45D01.007.062.977.06
#FFFFFF7.061.0021.001.00
#0000002.9721.001.0021.00
##FFFFFF7.061.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005FD4
Deuteranopia (green-blind)
#0052CD
Tritanopia (blue-blind)
#006A85
Achromatopsia (no color)
#585858

Design tokens & code

CSS
--color: #3f45d0;
/* rgb */ color: rgb(63, 69, 208);
/* oklch */ color: oklch(48.0% 0.209 273.4);
Tailwind
colors: {
  custom: {
    50: '#8779e0',
    500: '#3f45d0',
    950: '#000000',
  },
}
SCSS
$custom: #3f45d0;
$custom-light: #8779e0;
$custom-dark: #000000;
JSON
{
  "hex": "#3f45d0",
  "rgb": {
    "r": 63,
    "g": 69,
    "b": 208
  },
  "hsl": {
    "h": 237.517,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.47955,
    "c": 0.20909,
    "h": 273.4
  },
  "luminance": 0.09867
}

Semantic roles & 50–950 ramp

primary
#3F45D0
secondary
#D5D296
accent
#DD44E4
background
#F9F7FD
surface
#F1EDFB
border
#CBC8D4
text
#0D0915
muted
#7E7B83

Preview Lab

Preview with #3F45D0

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

Preview Lab → · Contrast checker → · Palette generator →

#3F45D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva