#3661D4#3661D4

#3661D4 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.9% C 0.184 H 265.1°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX#3661D4
RGBrgb(54, 97, 212)
HSLhsl(224, 65%, 52%)
HSVhsv(224, 75%, 83%)
CMYKcmyk(74.5%, 54.2%, 0%, 16.9%)
CIE-LABlab(44.35, 25.25, -63.53)
CIE-LCHlch(44.35, 68.36, 291.67°)
OKLaboklab(52.94% -0.0156 -0.1831)
OKLCHoklch(52.94% 0.184 265.1)
XYZxyz(17.6755, 14.0852, 64.0618)
Luminance0.1409 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3661D4 #D4A936
analogous
#36B0D4 #3661D4 #5A36D4
triadic
#3661D4 #D43661 #61D436
tetradic
#3661D4 #D436B0 #D4A936 #36D45A
square
#3661D4 #D436B0 #D4A936 #36D45A
split-complementary
#3661D4 #D45A36 #B0D436
monochromatic
#193376 #2448A9 #3661D4 #6889DF #9BB0EA

Accessibility & contrast

On white

5.50
#3661D4 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.82
#3661D4 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661D4
5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3661D4#FFFFFF#000000##FFFFFF
##3661D41.005.503.825.50
#FFFFFF5.501.0021.001.00
#0000003.8221.001.0021.00
##FFFFFF5.501.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0070D8
Deuteranopia (green-blind)
#0062D2
Tritanopia (blue-blind)
#007D91
Achromatopsia (no color)
#696969

Design tokens & code

CSS
--color: #3661d4;
/* rgb */ color: rgb(54, 97, 212);
/* oklch */ color: oklch(52.9% 0.184 265.1);
Tailwind
colors: {
  custom: {
    50: '#838de2',
    500: '#3661d4',
    950: '#000000',
  },
}
SCSS
$custom: #3661d4;
$custom-light: #838de2;
$custom-dark: #000000;
JSON
{
  "hex": "#3661d4",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 212
  },
  "hsl": {
    "h": 223.671,
    "s": 64.754,
    "l": 52.157
  },
  "oklch": {
    "l": 0.52943,
    "c": 0.18374,
    "h": 265.1
  },
  "luminance": 0.14087
}

Semantic roles & 50–950 ramp

primary
#3661D4
secondary
#D5C390
accent
#BA40E8
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83

Preview Lab

Preview with #3661D4

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

Preview Lab → · Contrast checker → · Palette generator →

#3661D4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva