#309BC9#309BC9

#309BC9 is a light, moderate cyan. Relative luminance 0.283; OKLCH L 65.0% C 0.116 H 231.4°. Best body text is #000000 at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#309BC9
RGB	rgb(48, 155, 201)
HSL	hsl(198, 61%, 49%)
HSV	hsv(198, 76%, 79%)
CMYK	cmyk(76.1%, 22.9%, 0%, 21.2%)
CIE-LAB	lab(60.15, -14.49, -32.20)
CIE-LCH	lch(60.15, 35.31, 245.77°)
OKLab	oklab(65.01% -0.0723 -0.0906)
OKLCH	oklch(65.01% 0.116 231.4)
XYZ	xyz(23.4786, 28.2853, 59.4692)
Luminance	0.2829 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309BC9 #C95E30

analogous

#30C9AB #309BC9 #304FC9

triadic

#309BC9 #C9309B #9BC930

tetradic

#309BC9 #AB30C9 #C95E30 #4FC930

square

#309BC9 #AB30C9 #C95E30 #4FC930

split-complementary

#309BC9 #C9304F #C9AB30

monochromatic

#184F66 #247598 #309BC9 #5EB4D8 #8FCBE4

Accessibility & contrast

On white

3.15

#309BC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.66

#309BC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309BC9

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309BC9	#FFFFFF	#000000	##000000
##309BC9	1.00	3.15	6.66	6.66
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.66	21.00	1.00	1.00
##000000	6.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8499CB

Deuteranopia (green-blind)

#6F8BC8

Tritanopia (blue-blind)

#00A7AA

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #309bc9;
/* rgb */ color: rgb(48, 155, 201);
/* oklch */ color: oklch(65.0% 0.116 231.4);

Tailwind

colors: {
  custom: {
    50: '#7fb8d9',
    500: '#309bc9',
    950: '#000000',
  },
}

SCSS

$custom: #309bc9;
$custom-light: #7fb8d9;
$custom-dark: #000000;

JSON

{
  "hex": "#309bc9",
  "rgb": {
    "r": 48,
    "g": 155,
    "b": 201
  },
  "hsl": {
    "h": 198.039,
    "s": 61.446,
    "l": 48.824
  },
  "oklch": {
    "l": 0.65009,
    "c": 0.11593,
    "h": 231.4
  },
  "luminance": 0.28288
}

Semantic roles & 50–950 ramp

primary

#309BC9

secondary

#CF9C86

accent

#7443E5

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #309BC9

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

Preview Lab → · Contrast checker → · Palette generator →