#3578DA#3578DA

#3578DA is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.1% C 0.165 H 258.2°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX#3578DA
RGBrgb(53, 120, 218)
HSLhsl(216, 69%, 53%)
HSVhsv(216, 76%, 85%)
CMYKcmyk(75.7%, 45%, 0%, 14.5%)
CIE-LABlab(50.98, 12.78, -56.25)
CIE-LCHlch(50.98, 57.69, 282.80°)
OKLaboklab(58.12% -0.0336 -0.1613)
OKLCHoklch(58.12% 0.165 258.2)
XYZxyz(20.8349, 19.2494, 68.9335)
Luminance0.1925 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3578DA #DA9735
analogous
#35CBDA #3578DA #4435DA
triadic
#3578DA #DA3578 #78DA35
tetradic
#3578DA #DA35CB #DA9735 #35DA44
square
#3578DA #DA35CB #DA9735 #35DA44
split-complementary
#3578DA #DA4435 #CBDA35
monochromatic
#17417E #205BB1 #3578DA #699BE3 #9CBDED

Accessibility & contrast

On white

4.33
#3578DA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.85
#3578DA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3578DA
4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3578DA#FFFFFF#000000##000000
##3578DA1.004.334.854.85
#FFFFFF4.331.0021.0021.00
#0000004.8521.001.001.00
##0000004.8521.001.001.00

Color blindness preview

Protanopia (red-blind)
#4581DE
Deuteranopia (green-blind)
#2172D8
Tritanopia (blue-blind)
#008F9E
Achromatopsia (no color)
#797979

Design tokens & code

CSS
--color: #3578da;
/* rgb */ color: rgb(53, 120, 218);
/* oklch */ color: oklch(58.1% 0.165 258.2);
Tailwind
colors: {
  custom: {
    50: '#839ee6',
    500: '#3578da',
    950: '#000000',
  },
}
SCSS
$custom: #3578da;
$custom-light: #839ee6;
$custom-dark: #000000;
JSON
{
  "hex": "#3578da",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 218
  },
  "hsl": {
    "h": 215.636,
    "s": 69.038,
    "l": 53.137
  },
  "oklch": {
    "l": 0.5812,
    "c": 0.16475,
    "h": 258.2
  },
  "luminance": 0.19252
}

Semantic roles & 50–950 ramp

primary
#3578DA
secondary
#D9BC92
accent
#A43CEC
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0C0E16
muted
#7D7E84

Preview Lab

Preview with #3578DA

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

Preview Lab → · Contrast checker → · Palette generator →

#3578DA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva