#309CB8#309CB8

#309CB8 is a light, moderate cyan. Relative luminance 0.279; OKLCH L 64.5% C 0.103 H 219.2°. Best body text is #000000 at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#309CB8
RGB	rgb(48, 156, 184)
HSL	hsl(192, 59%, 45%)
HSV	hsv(192, 74%, 72%)
CMYK	cmyk(73.9%, 15.2%, 0%, 27.8%)
CIE-LAB	lab(59.77, -20.72, -23.23)
CIE-LCH	lch(59.77, 31.13, 228.26°)
OKLab	oklab(64.48% -0.0797 -0.0649)
OKLCH	oklch(64.48% 0.103 219.2)
XYZ	xyz(21.7555, 27.8634, 49.5697)
Luminance	0.2787 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309CB8 #B84C30

analogous

#30B890 #309CB8 #3058B8

triadic

#309CB8 #B8309C #9CB830

tetradic

#309CB8 #9030B8 #B84C30 #58B830

square

#309CB8 #9030B8 #B84C30 #58B830

split-complementary

#309CB8 #B83058 #B89030

monochromatic

#174A57 #237387 #309CB8 #53B8D2 #84CCDF

Accessibility & contrast

On white

3.19

#309CB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.57

#309CB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309CB8

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309CB8	#FFFFFF	#000000	##000000
##309CB8	1.00	3.19	6.57	6.57
#FFFFFF	3.19	1.00	21.00	21.00
#000000	6.57	21.00	1.00	1.00
##000000	6.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B98BA

Deuteranopia (green-blind)

#788AB8

Tritanopia (blue-blind)

#00A5A5

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #309cb8;
/* rgb */ color: rgb(48, 156, 184);
/* oklch */ color: oklch(64.5% 0.103 219.2);

Tailwind

colors: {
  custom: {
    50: '#7cb9cd',
    500: '#309cb8',
    950: '#000000',
  },
}

SCSS

$custom: #309cb8;
$custom-light: #7cb9cd;
$custom-dark: #000000;

JSON

{
  "hex": "#309cb8",
  "rgb": {
    "r": 48,
    "g": 156,
    "b": 184
  },
  "hsl": {
    "h": 192.353,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.64479,
    "c": 0.10275,
    "h": 219.2
  },
  "luminance": 0.27866
}

Semantic roles & 50–950 ramp

primary

#309CB8

secondary

#C88B7C

accent

#6646E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309CB8

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

Preview Lab → · Contrast checker → · Palette generator →