#3F70D0#3F70D0

#3F70D0 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.1% C 0.158 H 262.2°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX#3F70D0
RGBrgb(63, 112, 208)
HSLhsl(220, 61%, 53%)
HSVhsv(220, 70%, 82%)
CMYKcmyk(69.7%, 46.2%, 0%, 18.4%)
CIE-LABlab(48.51, 15.45, -54.52)
CIE-LCHlch(48.51, 56.67, 285.83°)
OKLaboklab(56.12% -0.0213 -0.1562)
OKLCHoklch(56.12% 0.158 262.2)
XYZxyz(19.2252, 17.1972, 61.9685)
Luminance0.1720 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F70D0 #D09F3F
analogous
#3FB8D0 #3F70D0 #563FD0
triadic
#3F70D0 #D03F70 #70D03F
tetradic
#3F70D0 #D03FB8 #D09F3F #3FD056
square
#3F70D0 #D03FB8 #D09F3F #3FD056
split-complementary
#3F70D0 #D0563F #B8D03F
monochromatic
#1D3C77 #2954A9 #3F70D0 #7095DC #A1B9E8

Accessibility & contrast

On white

4.73
#3F70D0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.44
#3F70D0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F70D0
4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F70D0#FFFFFF#000000##FFFFFF
##3F70D01.004.734.444.73
#FFFFFF4.731.0021.001.00
#0000004.4421.001.0021.00
##FFFFFF4.731.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3E7AD4
Deuteranopia (green-blind)
#1F6DCE
Tritanopia (blue-blind)
#008696
Achromatopsia (no color)
#737373

Design tokens & code

CSS
--color: #3f70d0;
/* rgb */ color: rgb(63, 112, 208);
/* oklch */ color: oklch(56.1% 0.158 262.2);
Tailwind
colors: {
  custom: {
    50: '#8598df',
    500: '#3f70d0',
    950: '#000000',
  },
}
SCSS
$custom: #3f70d0;
$custom-light: #8598df;
$custom-dark: #000000;
JSON
{
  "hex": "#3f70d0",
  "rgb": {
    "r": 63,
    "g": 112,
    "b": 208
  },
  "hsl": {
    "h": 219.724,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.56122,
    "c": 0.15763,
    "h": 262.2
  },
  "luminance": 0.17199
}

Semantic roles & 50–950 ramp

primary
#3F70D0
secondary
#D5C096
accent
#AE44E4
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0D15
muted
#7D7E83

Preview Lab

Preview with #3F70D0

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

Preview Lab → · Contrast checker → · Palette generator →

#3F70D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva