#3F4BCE#3F4BCE

#3F4BCE is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.8% C 0.200 H 272.5°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX#3F4BCE
RGBrgb(63, 75, 206)
HSLhsl(235, 59%, 53%)
HSVhsv(235, 69%, 81%)
CMYKcmyk(69.4%, 63.6%, 0%, 19.2%)
CIE-LABlab(38.80, 38.15, -69.11)
CIE-LCHlch(38.80, 78.94, 298.90°)
OKLaboklab(48.78% 0.0086 -0.1995)
OKLCHoklch(48.78% 0.2 272.5)
XYZxyz(15.7028, 10.5436, 59.5881)
Luminance0.1055 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F4BCE #CEC23F
analogous
#3F92CE #3F4BCE #7A3FCE
triadic
#3F4BCE #CE3F4B #4BCE3F
tetradic
#3F4BCE #CE3F92 #CEC23F #3FCE7A
square
#3F4BCE #CE3F92 #CEC23F #3FCE7A
split-complementary
#3F4BCE #CE7A3F #92CE3F
monochromatic
#1E2575 #2A35A6 #3F4BCE #7079DA #A1A6E7

Accessibility & contrast

On white

6.75
#3F4BCE on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.11
#3F4BCE on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4BCE
6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F4BCE#FFFFFF#000000##FFFFFF
##3F4BCE1.006.753.116.75
#FFFFFF6.751.0021.001.00
#0000003.1121.001.0021.00
##FFFFFF6.751.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0062D2
Deuteranopia (green-blind)
#0055CB
Tritanopia (blue-blind)
#006D85
Achromatopsia (no color)
#5B5B5B

Design tokens & code

CSS
--color: #3f4bce;
/* rgb */ color: rgb(63, 75, 206);
/* oklch */ color: oklch(48.8% 0.200 272.5);
Tailwind
colors: {
  custom: {
    50: '#867dde',
    500: '#3f4bce',
    950: '#000000',
  },
}
SCSS
$custom: #3f4bce;
$custom-light: #867dde;
$custom-dark: #000000;
JSON
{
  "hex": "#3f4bce",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 206
  },
  "hsl": {
    "h": 234.965,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.48778,
    "c": 0.19973,
    "h": 272.5
  },
  "luminance": 0.10545
}

Semantic roles & 50–950 ramp

primary
#3F4BCE
secondary
#D3CE95
accent
#D545E3
background
#F9F7FD
surface
#F1EEFB
border
#CBC9D4
text
#0D0915
muted
#7E7B83

Preview Lab

Preview with #3F4BCE

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

Preview Lab → · Contrast checker → · Palette generator →

#3F4BCE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva