#3770D0#3770D0

#3770D0 is a mid, vivid blue. Relative luminance 0.170; OKLCH L 55.8% C 0.160 H 260.2°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX#3770D0
RGBrgb(55, 112, 208)
HSLhsl(218, 62%, 52%)
HSVhsv(218, 74%, 82%)
CMYKcmyk(73.6%, 46.2%, 0%, 18.4%)
CIE-LABlab(48.20, 14.34, -55.03)
CIE-LCHlch(48.20, 56.87, 284.61°)
OKLaboklab(55.8% -0.0273 -0.1578)
OKLCHoklch(55.8% 0.16 260.2)
XYZxyz(18.7508, 16.9526, 61.9462)
Luminance0.1696 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3770D0 #D09737
analogous
#37BDD0 #3770D0 #4B37D0
triadic
#3770D0 #D03770 #70D037
tetradic
#3770D0 #D037BD #D09737 #37D04B
square
#3770D0 #D037BD #D09737 #37D04B
split-complementary
#3770D0 #D04B37 #BDD037
monochromatic
#1B3B72 #2655A3 #3770D0 #6993DC #9AB7E7

Accessibility & contrast

On white

4.78
#3770D0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.39
#3770D0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3770D0
4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3770D0#FFFFFF#000000##FFFFFF
##3770D01.004.784.394.78
#FFFFFF4.781.0021.001.00
#0000004.3921.001.0021.00
##FFFFFF4.781.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3D7AD4
Deuteranopia (green-blind)
#196CCE
Tritanopia (blue-blind)
#008796
Achromatopsia (no color)
#727272

Design tokens & code

CSS
--color: #3770d0;
/* rgb */ color: rgb(55, 112, 208);
/* oklch */ color: oklch(55.8% 0.160 260.2);
Tailwind
colors: {
  custom: {
    50: '#8298df',
    500: '#3770d0',
    950: '#000000',
  },
}
SCSS
$custom: #3770d0;
$custom-light: #8298df;
$custom-dark: #000000;
JSON
{
  "hex": "#3770d0",
  "rgb": {
    "r": 55,
    "g": 112,
    "b": 208
  },
  "hsl": {
    "h": 217.647,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.558,
    "c": 0.16016,
    "h": 260.2
  },
  "luminance": 0.16955
}

Semantic roles & 50–950 ramp

primary
#3770D0
secondary
#D3BA90
accent
#A943E5
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0D15
muted
#7D7E83

Preview Lab

Preview with #3770D0

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

Preview Lab → · Contrast checker → · Palette generator →

#3770D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva