#3771DA#3771DA

#3771DA is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.7% C 0.172 H 261.1°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX#3771DA
RGBrgb(55, 113, 218)
HSLhsl(219, 69%, 54%)
HSVhsv(219, 75%, 85%)
CMYKcmyk(74.8%, 48.2%, 0%, 14.5%)
CIE-LABlab(49.11, 17.40, -59.26)
CIE-LCHlch(49.11, 61.76, 286.37°)
OKLaboklab(56.7% -0.0266 -0.1702)
OKLCHoklch(56.7% 0.172 261.1)
XYZxyz(20.1310, 17.6822, 68.6681)
Luminance0.1768 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3771DA #DAA037
analogous
#37C2DA #3771DA #4E37DA
triadic
#3771DA #DA3771 #71DA37
tetradic
#3771DA #DA37C2 #DAA037 #37DA4E
square
#3771DA #DA37C2 #DAA037 #37DA4E
split-complementary
#3771DA #DA4E37 #C2DA37
monochromatic
#183C7F #2155B3 #3771DA #6B96E4 #9EBAED

Accessibility & contrast

On white

4.63
#3771DA on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.54
#3771DA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3771DA
4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3771DA#FFFFFF#000000##FFFFFF
##3771DA1.004.634.544.63
#FFFFFF4.631.0021.001.00
#0000004.5421.001.0021.00
##FFFFFF4.631.0021.001.00

Color blindness preview

Protanopia (red-blind)
#357DDE
Deuteranopia (green-blind)
#006ED8
Tritanopia (blue-blind)
#008A9B
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #3771da;
/* rgb */ color: rgb(55, 113, 218);
/* oklch */ color: oklch(56.7% 0.172 261.1);
Tailwind
colors: {
  custom: {
    50: '#8499e6',
    500: '#3771da',
    950: '#000000',
  },
}
SCSS
$custom: #3771da;
$custom-light: #8499e6;
$custom-dark: #000000;
JSON
{
  "hex": "#3771da",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 218
  },
  "hsl": {
    "h": 218.65,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.567,
    "c": 0.17229,
    "h": 261.1
  },
  "luminance": 0.17684
}

Semantic roles & 50–950 ramp

primary
#3771DA
secondary
#D9C093
accent
#AD3CEC
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0C0D16
muted
#7D7E84

Preview Lab

Preview with #3771DA

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

Preview Lab → · Contrast checker → · Palette generator →

#3771DA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva