#3F7DD5#3F7DD5

#3F7DD5 is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.2% C 0.149 H 257.5°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX#3F7DD5
RGBrgb(63, 125, 213)
HSLhsl(215, 64%, 54%)
HSVhsv(215, 70%, 84%)
CMYKcmyk(70.4%, 41.3%, 0%, 16.5%)
CIE-LABlab(52.43, 9.19, -51.09)
CIE-LCHlch(52.43, 51.91, 280.19°)
OKLaboklab(59.24% -0.0322 -0.1459)
OKLCHoklch(59.24% 0.149 257.5)
XYZxyz(21.3894, 20.5258, 65.7725)
Luminance0.2053 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F7DD5 #D5973F
analogous
#3FC8D5 #3F7DD5 #4C3FD5
triadic
#3F7DD5 #D53F7D #7DD53F
tetradic
#3F7DD5 #D53FC8 #D5973F #3FD54C
square
#3F7DD5 #D53FC8 #D5973F #3FD54C
split-complementary
#3F7DD5 #D54C3F #C8D53F
monochromatic
#1C447E #275FB0 #3F7DD5 #719FE0 #A3C1EB

Accessibility & contrast

On white

4.11
#3F7DD5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.11
#3F7DD5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DD5
5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F7DD5#FFFFFF#000000##000000
##3F7DD51.004.115.115.11
#FFFFFF4.111.0021.0021.00
#0000005.1121.001.001.00
##0000005.1121.001.001.00

Color blindness preview

Protanopia (red-blind)
#5385D8
Deuteranopia (green-blind)
#3B77D3
Tritanopia (blue-blind)
#00919E
Achromatopsia (no color)
#7D7D7D

Design tokens & code

CSS
--color: #3f7dd5;
/* rgb */ color: rgb(63, 125, 213);
/* oklch */ color: oklch(59.2% 0.149 257.5);
Tailwind
colors: {
  custom: {
    50: '#85a2e2',
    500: '#3f7dd5',
    950: '#000000',
  },
}
SCSS
$custom: #3f7dd5;
$custom-light: #85a2e2;
$custom-dark: #000000;
JSON
{
  "hex": "#3f7dd5",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 213
  },
  "hsl": {
    "h": 215.2,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.59242,
    "c": 0.1494,
    "h": 257.5
  },
  "luminance": 0.20528
}

Semantic roles & 50–950 ramp

primary
#3F7DD5
secondary
#D8BD98
accent
#A241E7
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0F15
muted
#7D7E83

Preview Lab

Preview with #3F7DD5

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

Preview Lab → · Contrast checker → · Palette generator →

#3F7DD5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva