#3770CE#3770CE

#3770CE is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.7% C 0.157 H 259.9°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX#3770CE
RGBrgb(55, 112, 206)
HSLhsl(217, 61%, 51%)
HSVhsv(217, 73%, 81%)
CMYKcmyk(73.3%, 45.6%, 0%, 19.2%)
CIE-LABlab(48.08, 13.61, -54.09)
CIE-LCHlch(48.08, 55.77, 284.12°)
OKLaboklab(55.67% -0.0276 -0.155)
OKLCHoklch(55.67% 0.157 259.9)
XYZxyz(18.5063, 16.8548, 60.6585)
Luminance0.1686 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3770CE #CE9537
analogous
#37BBCE #3770CE #4937CE
triadic
#3770CE #CE3770 #70CE37
tetradic
#3770CE #CE37BB #CE9537 #37CE49
square
#3770CE #CE37BB #CE9537 #37CE49
split-complementary
#3770CE #CE4937 #BBCE37
monochromatic
#1B3B6F #2755A0 #3770CE #6893DA #99B6E6

Accessibility & contrast

On white

4.80
#3770CE on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.37
#3770CE on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3770CE
4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3770CE#FFFFFF#000000##FFFFFF
##3770CE1.004.804.374.80
#FFFFFF4.801.0021.001.00
#0000004.3721.001.0021.00
##FFFFFF4.801.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3F7AD2
Deuteranopia (green-blind)
#1E6CCC
Tritanopia (blue-blind)
#008695
Achromatopsia (no color)
#727272

Design tokens & code

CSS
--color: #3770ce;
/* rgb */ color: rgb(55, 112, 206);
/* oklch */ color: oklch(55.7% 0.157 259.9);
Tailwind
colors: {
  custom: {
    50: '#8198dd',
    500: '#3770ce',
    950: '#000000',
  },
}
SCSS
$custom: #3770ce;
$custom-light: #8198dd;
$custom-dark: #000000;
JSON
{
  "hex": "#3770ce",
  "rgb": {
    "r": 55,
    "g": 112,
    "b": 206
  },
  "hsl": {
    "h": 217.351,
    "s": 60.643,
    "l": 51.176
  },
  "oklch": {
    "l": 0.55665,
    "c": 0.15748,
    "h": 259.9
  },
  "luminance": 0.16857
}

Semantic roles & 50–950 ramp

primary
#3770CE
secondary
#D2B98F
accent
#A744E4
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0D15
muted
#7D7E83

Preview Lab

Preview with #3770CE

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

Preview Lab → · Contrast checker → · Palette generator →

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