#3775DA#3775DA

#3775DA is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.5% C 0.168 H 259.7°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX#3775DA
RGBrgb(55, 117, 218)
HSLhsl(217, 69%, 54%)
HSVhsv(217, 75%, 85%)
CMYKcmyk(74.8%, 46.3%, 0%, 14.5%)
CIE-LABlab(50.21, 14.89, -57.48)
CIE-LCHlch(50.21, 59.38, 284.52°)
OKLaboklab(57.55% -0.0298 -0.1649)
OKLCHoklch(57.55% 0.168 259.7)
XYZxyz(20.5871, 18.5944, 68.8202)
Luminance0.1860 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3775DA #DA9C37
analogous
#37C6DA #3775DA #4A37DA
triadic
#3775DA #DA3775 #75DA37
tetradic
#3775DA #DA37C6 #DA9C37 #37DA4A
square
#3775DA #DA37C6 #DA9C37 #37DA4A
split-complementary
#3775DA #DA4A37 #C6DA37
monochromatic
#183F7F #2158B3 #3775DA #6B99E4 #9EBCED

Accessibility & contrast

On white

4.45
#3775DA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.72
#3775DA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3775DA
4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3775DA#FFFFFF#000000##000000
##3775DA1.004.454.724.72
#FFFFFF4.451.0021.0021.00
#0000004.7221.001.001.00
##0000004.7221.001.001.00

Color blindness preview

Protanopia (red-blind)
#3F7FDE
Deuteranopia (green-blind)
#1570D8
Tritanopia (blue-blind)
#008D9D
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3775da;
/* rgb */ color: rgb(55, 117, 218);
/* oklch */ color: oklch(57.5% 0.168 259.7);
Tailwind
colors: {
  custom: {
    50: '#839ce6',
    500: '#3775da',
    950: '#000000',
  },
}
SCSS
$custom: #3775da;
$custom-light: #839ce6;
$custom-dark: #000000;
JSON
{
  "hex": "#3775da",
  "rgb": {
    "r": 55,
    "g": 117,
    "b": 218
  },
  "hsl": {
    "h": 217.178,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57546,
    "c": 0.16761,
    "h": 259.7
  },
  "luminance": 0.18597
}

Semantic roles & 50–950 ramp

primary
#3775DA
secondary
#D9BF93
accent
#A93CEC
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0C0E16
muted
#7D7E84

Preview Lab

Preview with #3775DA

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

Preview Lab → · Contrast checker → · Palette generator →

#3775DA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva