#3B9CF4#3B9CF4

#3B9CF4 is a light, vivid cyan. Relative luminance 0.312; OKLCH L 67.8% C 0.158 H 249.6°. Best body text is #000000 at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#3B9CF4
RGB	rgb(59, 156, 244)
HSL	hsl(209, 89%, 59%)
HSV	hsv(209, 76%, 96%)
CMYK	cmyk(75.8%, 36.1%, 0%, 4.3%)
CIE-LAB	lab(62.71, 1.24, -52.01)
CIE-LCH	lch(62.71, 52.02, 271.37°)
OKLab	oklab(67.77% -0.055 -0.1481)
OKLCH	oklch(67.77% 0.158 249.6)
XYZ	xyz(30.0150, 31.2349, 90.0174)
Luminance	0.3124 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B9CF4 #F4933B

analogous

#3BF4F0 #3B9CF4 #3B3FF4

triadic

#3B9CF4 #F43B9C #9CF43B

tetradic

#3B9CF4 #F03BF4 #F4933B #3FF43B

square

#3B9CF4 #F03BF4 #F4933B #3FF43B

split-complementary

#3B9CF4 #F43B3F #F4F03B

monochromatic

#0A5EAB #0D7EE5 #3B9CF4 #75B9F7 #AFD7FB

Accessibility & contrast

On white

2.90

#3B9CF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.25

#3B9CF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3B9CF4

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B9CF4	#FFFFFF	#000000	##000000
##3B9CF4	1.00	2.90	7.25	7.25
#FFFFFF	2.90	1.00	21.00	21.00
#000000	7.25	21.00	1.00	1.00
##000000	7.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#73A1F8

Deuteranopia (green-blind)

#5790F2

Tritanopia (blue-blind)

#00B1BC

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #3b9cf4;
/* rgb */ color: rgb(59, 156, 244);
/* oklch */ color: oklch(67.8% 0.158 249.6);

Tailwind

colors: {
  custom: {
    50: '#89b8f8',
    500: '#3b9cf4',
    950: '#000000',
  },
}

SCSS

$custom: #3b9cf4;
$custom-light: #89b8f8;
$custom-dark: #000000;

JSON

{
  "hex": "#3b9cf4",
  "rgb": {
    "r": 59,
    "g": 156,
    "b": 244
  },
  "hsl": {
    "h": 208.541,
    "s": 89.372,
    "l": 59.412
  },
  "oklch": {
    "l": 0.67768,
    "c": 0.15801,
    "h": 249.6
  },
  "luminance": 0.31238
}

Semantic roles & 50–950 ramp

primary

#3B9CF4

secondary

#E9C4A1

accent

#8F29FF

background

#F9FBFF

surface

#F2F6FF

border

#CCD0D7

text

#0D1117

muted

#7E8085

Preview Lab

Preview with #3B9CF4

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

Preview Lab → · Contrast checker → · Palette generator →