#3F90CB#3F90CB

#3F90CB is a light, moderate cyan. Relative luminance 0.253; OKLCH L 63.0% C 0.119 H 243.5°. Best body text is #000000 at 6.06:1 contrast (WCAG AA passes).

Color values

HEX#3F90CB
RGBrgb(63, 144, 203)
HSLhsl(205, 57%, 52%)
HSVhsv(205, 69%, 80%)
CMYKcmyk(69%, 29.1%, 0%, 20.4%)
CIE-LABlab(57.38, -5.62, -37.61)
CIE-LCHlch(57.38, 38.03, 261.50°)
OKLaboklab(62.95% -0.0531 -0.1062)
OKLCHoklch(62.95% 0.119 243.5)
XYZxyz(22.7985, 25.3126, 60.1726)
Luminance0.2531 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F90CB #CB7A3F
analogous
#3FCBC0 #3F90CB #3F4ACB
triadic
#3F90CB #CB3F90 #90CB3F
tetradic
#3F90CB #C03FCB #CB7A3F #4ACB3F
square
#3F90CB #C03FCB #CB7A3F #4ACB3F
split-complementary
#3F90CB #CB3F4A #CBC03F
monochromatic
#1F4E71 #2C70A1 #3F90CB #6FACD8 #9FC8E5

Accessibility & contrast

On white

3.46
#3F90CB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.06
#3F90CB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F90CB
6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F90CB#FFFFFF#000000##000000
##3F90CB1.003.466.066.06
#FFFFFF3.461.0021.0021.00
#0000006.0621.001.001.00
##0000006.0621.001.001.00

Color blindness preview

Protanopia (red-blind)
#7591CE
Deuteranopia (green-blind)
#6284CA
Tritanopia (blue-blind)
#009EA5
Achromatopsia (no color)
#8A8A8A

Design tokens & code

CSS
--color: #3f90cb;
/* rgb */ color: rgb(63, 144, 203);
/* oklch */ color: oklch(63.0% 0.119 243.5);
Tailwind
colors: {
  custom: {
    50: '#84b0db',
    500: '#3f90cb',
    950: '#000000',
  },
}
SCSS
$custom: #3f90cb;
$custom-light: #84b0db;
$custom-dark: #000000;
JSON
{
  "hex": "#3f90cb",
  "rgb": {
    "r": 63,
    "g": 144,
    "b": 203
  },
  "hsl": {
    "h": 205.286,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.62954,
    "c": 0.11876,
    "h": 243.5
  },
  "luminance": 0.25315
}

Semantic roles & 50–950 ramp

primary
#3F90CB
secondary
#D1AE94
accent
#8847E1
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3F90CB

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

Preview Lab → · Contrast checker → · Palette generator →

#3F90CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva