#309FB8#309FB8

#309FB8 is a light, moderate cyan. Relative luminance 0.289; OKLCH L 65.2% C 0.103 H 216.4°. Best body text is #000000 at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#309FB8
RGB	rgb(48, 159, 184)
HSL	hsl(191, 59%, 45%)
HSV	hsv(191, 74%, 72%)
CMYK	cmyk(73.9%, 13.6%, 0%, 27.8%)
CIE-LAB	lab(60.68, -22.29, -21.83)
CIE-LCH	lch(60.68, 31.19, 224.41°)
OKLab	oklab(65.21% -0.0827 -0.0609)
OKLCH	oklch(65.21% 0.103 216.4)
XYZ	xyz(22.2651, 28.8827, 49.7396)
Luminance	0.2888 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309FB8 #B84930

analogous

#30B88D #309FB8 #305BB8

triadic

#309FB8 #B8309F #9FB830

tetradic

#309FB8 #8D30B8 #B84930 #5BB830

square

#309FB8 #8D30B8 #B84930 #5BB830

split-complementary

#309FB8 #B8305B #B88D30

monochromatic

#174B57 #237587 #309FB8 #53BBD2 #84CEDF

Accessibility & contrast

On white

3.10

#309FB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.78

#309FB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309FB8

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309FB8	#FFFFFF	#000000	##000000
##309FB8	1.00	3.10	6.78	6.78
#FFFFFF	3.10	1.00	21.00	21.00
#000000	6.78	21.00	1.00	1.00
##000000	6.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E9AB9

Deuteranopia (green-blind)

#7C8CB8

Tritanopia (blue-blind)

#00A8A7

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #309fb8;
/* rgb */ color: rgb(48, 159, 184);
/* oklch */ color: oklch(65.2% 0.103 216.4);

Tailwind

colors: {
  custom: {
    50: '#7cbbcd',
    500: '#309fb8',
    950: '#000000',
  },
}

SCSS

$custom: #309fb8;
$custom-light: #7cbbcd;
$custom-dark: #000000;

JSON

{
  "hex": "#309fb8",
  "rgb": {
    "r": 48,
    "g": 159,
    "b": 184
  },
  "hsl": {
    "h": 191.029,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.65213,
    "c": 0.10268,
    "h": 216.4
  },
  "luminance": 0.28885
}

Semantic roles & 50–950 ramp

primary

#309FB8

secondary

#C88A7C

accent

#6346E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1213

muted

#7C8182

Preview Lab

Preview with #309FB8

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

Preview Lab → · Contrast checker → · Palette generator →