#3F84CB#3F84CB

#3F84CB is a mid, vivid cyan. Relative luminance 0.219; OKLCH L 60.2% C 0.129 H 251.4°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX#3F84CB
RGBrgb(63, 132, 203)
HSLhsl(210, 57%, 52%)
HSVhsv(210, 69%, 80%)
CMYKcmyk(69%, 35%, 0%, 20.4%)
CIE-LABlab(53.89, 1.40, -43.11)
CIE-LCHlch(53.89, 43.13, 271.86°)
OKLaboklab(60.21% -0.0412 -0.1224)
OKLCHoklch(60.21% 0.129 251.4)
XYZxyz(21.0767, 21.8689, 59.5987)
Luminance0.2187 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F84CB #CB863F
analogous
#3FCACB #3F84CB #403FCB
triadic
#3F84CB #CB3F84 #84CB3F
tetradic
#3F84CB #CB3FCA #CB863F #3FCB40
square
#3F84CB #CB3FCA #CB863F #3FCB40
split-complementary
#3F84CB #CB403F #CACB3F
monochromatic
#1F4771 #2C66A1 #3F84CB #6FA3D8 #9FC2E5

Accessibility & contrast

On white

3.91
#3F84CB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.37
#3F84CB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F84CB
5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F84CB#FFFFFF#000000##000000
##3F84CB1.003.915.375.37
#FFFFFF3.911.0021.0021.00
#0000005.3721.001.001.00
##0000005.3721.001.001.00

Color blindness preview

Protanopia (red-blind)
#6488CE
Deuteranopia (green-blind)
#507BCA
Tritanopia (blue-blind)
#00959E
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3f84cb;
/* rgb */ color: rgb(63, 132, 203);
/* oklch */ color: oklch(60.2% 0.129 251.4);
Tailwind
colors: {
  custom: {
    50: '#83a7db',
    500: '#3f84cb',
    950: '#000000',
  },
}
SCSS
$custom: #3f84cb;
$custom-light: #83a7db;
$custom-dark: #000000;
JSON
{
  "hex": "#3f84cb",
  "rgb": {
    "r": 63,
    "g": 132,
    "b": 203
  },
  "hsl": {
    "h": 210.429,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.60206,
    "c": 0.12915,
    "h": 251.4
  },
  "luminance": 0.21871
}

Semantic roles & 50–950 ramp

primary
#3F84CB
secondary
#D1B394
accent
#9547E1
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C0F15
muted
#7D7F83

Preview Lab

Preview with #3F84CB

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

Preview Lab → · Contrast checker → · Palette generator →

#3F84CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva