#309AB9#309AB9

#309AB9 is a light, moderate cyan. Relative luminance 0.272; OKLCH L 64.0% C 0.104 H 221.7°. Best body text is #000000 at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#309AB9
RGB	rgb(48, 154, 185)
HSL	hsl(194, 59%, 46%)
HSV	hsv(194, 74%, 73%)
CMYK	cmyk(74.1%, 16.8%, 0%, 27.5%)
CIE-LAB	lab(59.20, -19.34, -24.67)
CIE-LCH	lch(59.20, 31.34, 231.91°)
OKLab	oklab(64.04% -0.0773 -0.069)
OKLCH	oklch(64.04% 0.104 221.7)
XYZ	xyz(21.5278, 27.2398, 50.0128)
Luminance	0.2724 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309AB9 #B94F30

analogous

#30B993 #309AB9 #3055B9

triadic

#309AB9 #B9309A #9AB930

tetradic

#309AB9 #9330B9 #B94F30 #55B930

square

#309AB9 #9330B9 #B94F30 #55B930

split-complementary

#309AB9 #B93055 #B99330

monochromatic

#174958 #237288 #309AB9 #54B6D3 #84CBDF

Accessibility & contrast

On white

3.26

#309AB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.45

#309AB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309AB9

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309AB9	#FFFFFF	#000000	##000000
##309AB9	1.00	3.26	6.45	6.45
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.45	21.00	1.00	1.00
##000000	6.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8896BB

Deuteranopia (green-blind)

#7589B9

Tritanopia (blue-blind)

#00A4A4

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #309ab9;
/* rgb */ color: rgb(48, 154, 185);
/* oklch */ color: oklch(64.0% 0.104 221.7);

Tailwind

colors: {
  custom: {
    50: '#7cb8ce',
    500: '#309ab9',
    950: '#000000',
  },
}

SCSS

$custom: #309ab9;
$custom-light: #7cb8ce;
$custom-dark: #000000;

JSON

{
  "hex": "#309ab9",
  "rgb": {
    "r": 48,
    "g": 154,
    "b": 185
  },
  "hsl": {
    "h": 193.577,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.64035,
    "c": 0.10361,
    "h": 221.7
  },
  "luminance": 0.27242
}

Semantic roles & 50–950 ramp

primary

#309AB9

secondary

#C98E7C

accent

#6946E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309AB9

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

Preview Lab → · Contrast checker → · Palette generator →