#3B9BF4#3B9BF4

#3B9BF4 is a light, vivid cyan. Relative luminance 0.309; OKLCH L 67.5% C 0.159 H 250.1°. Best body text is #000000 at 7.18:1 contrast (WCAG AA passes).

Color values

HEX#3B9BF4
RGBrgb(59, 155, 244)
HSLhsl(209, 89%, 59%)
HSVhsv(209, 76%, 96%)
CMYKcmyk(75.8%, 36.5%, 0%, 4.3%)
CIE-LABlab(62.42, 1.82, -52.46)
CIE-LCHlch(62.42, 52.49, 271.99°)
OKLaboklab(67.55% -0.0541 -0.1495)
OKLCHoklch(67.55% 0.159 250.1)
XYZxyz(29.8479, 30.9006, 89.9617)
Luminance0.3090 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3B9BF4 #F4943B
analogous
#3BF4F1 #3B9BF4 #3B3FF4
triadic
#3B9BF4 #F43B9B #9BF43B
tetradic
#3B9BF4 #F13BF4 #F4943B #3FF43B
square
#3B9BF4 #F13BF4 #F4943B #3FF43B
split-complementary
#3B9BF4 #F43B3F #F4F13B
monochromatic
#0A5DAB #0D7DE5 #3B9BF4 #75B9F7 #AFD6FB

Accessibility & contrast

On white

2.92
#3B9BF4 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.18
#3B9BF4 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3B9BF4
7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3B9BF4#FFFFFF#000000##000000
##3B9BF41.002.927.187.18
#FFFFFF2.921.0021.0021.00
#0000007.1821.001.001.00
##0000007.1821.001.001.00

Color blindness preview

Protanopia (red-blind)
#71A0F8
Deuteranopia (green-blind)
#558FF2
Tritanopia (blue-blind)
#00B0BC
Achromatopsia (no color)
#979797

Design tokens & code

CSS
--color: #3b9bf4;
/* rgb */ color: rgb(59, 155, 244);
/* oklch */ color: oklch(67.5% 0.159 250.1);
Tailwind
colors: {
  custom: {
    50: '#89b8f8',
    500: '#3b9bf4',
    950: '#000000',
  },
}
SCSS
$custom: #3b9bf4;
$custom-light: #89b8f8;
$custom-dark: #000000;
JSON
{
  "hex": "#3b9bf4",
  "rgb": {
    "r": 59,
    "g": 155,
    "b": 244
  },
  "hsl": {
    "h": 208.865,
    "s": 89.372,
    "l": 59.412
  },
  "oklch": {
    "l": 0.67547,
    "c": 0.15897,
    "h": 250.1
  },
  "luminance": 0.30904
}

Semantic roles & 50–950 ramp

primary
#3B9BF4
secondary
#E9C4A1
accent
#9029FF
background
#F9FBFF
surface
#F2F6FF
border
#CCD0D7
text
#0D1117
muted
#7E8085

Preview Lab

Preview with #3B9BF4

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

Preview Lab → · Contrast checker → · Palette generator →

#3B9BF4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva