#309CB9#309CB9

#309CB9 is a light, moderate cyan. Relative luminance 0.279; OKLCH L 64.5% C 0.103 H 219.9°. Best body text is #000000 at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#309CB9
RGB	rgb(48, 156, 185)
HSL	hsl(193, 59%, 46%)
HSV	hsv(193, 74%, 73%)
CMYK	cmyk(74.1%, 15.7%, 0%, 27.5%)
CIE-LAB	lab(59.80, -20.39, -23.73)
CIE-LCH	lch(59.80, 31.29, 229.33°)
OKLab	oklab(64.52% -0.0793 -0.0663)
OKLCH	oklch(64.52% 0.103 219.9)
XYZ	xyz(21.8607, 27.9055, 50.1237)
Luminance	0.2791 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309CB9 #B94D30

analogous

#30B991 #309CB9 #3057B9

triadic

#309CB9 #B9309C #9CB930

tetradic

#309CB9 #9130B9 #B94D30 #57B930

square

#309CB9 #9130B9 #B94D30 #57B930

split-complementary

#309CB9 #B93057 #B99130

monochromatic

#174A58 #237388 #309CB9 #54B8D3 #84CCDF

Accessibility & contrast

On white

3.19

#309CB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.58

#309CB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309CB9

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309CB9	#FFFFFF	#000000	##000000
##309CB9	1.00	3.19	6.58	6.58
#FFFFFF	3.19	1.00	21.00	21.00
#000000	6.58	21.00	1.00	1.00
##000000	6.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A98BB

Deuteranopia (green-blind)

#788AB9

Tritanopia (blue-blind)

#00A5A5

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #309cb9;
/* rgb */ color: rgb(48, 156, 185);
/* oklch */ color: oklch(64.5% 0.103 219.9);

Tailwind

colors: {
  custom: {
    50: '#7cb9ce',
    500: '#309cb9',
    950: '#000000',
  },
}

SCSS

$custom: #309cb9;
$custom-light: #7cb9ce;
$custom-dark: #000000;

JSON

{
  "hex": "#309cb9",
  "rgb": {
    "r": 48,
    "g": 156,
    "b": 185
  },
  "hsl": {
    "h": 192.701,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.64522,
    "c": 0.10336,
    "h": 219.9
  },
  "luminance": 0.27908
}

Semantic roles & 50–950 ramp

primary

#309CB9

secondary

#C98C7C

accent

#6746E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309CB9

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

Preview Lab → · Contrast checker → · Palette generator →