#309FBC#309FBC

#309FBC is a light, moderate cyan. Relative luminance 0.291; OKLCH L 65.4% C 0.105 H 219.4°. Best body text is #000000 at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#309FBC
RGB	rgb(48, 159, 188)
HSL	hsl(192, 59%, 46%)
HSV	hsv(192, 74%, 74%)
CMYK	cmyk(74.5%, 15.4%, 0%, 26.3%)
CIE-LAB	lab(60.83, -20.98, -23.85)
CIE-LCH	lch(60.83, 31.76, 228.66°)
OKLab	oklab(65.38% -0.0811 -0.0666)
OKLCH	oklch(65.38% 0.105 219.4)
XYZ	xyz(22.6904, 29.0528, 51.9791)
Luminance	0.2905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309FBC #BC4D30

analogous

#30BC93 #309FBC #3059BC

triadic

#309FBC #BC309F #9FBC30

tetradic

#309FBC #9330BC #BC4D30 #59BC30

square

#309FBC #9330BC #BC4D30 #59BC30

split-complementary

#309FBC #BC3059 #BC9330

monochromatic

#174D5A #24768B #309FBC #55BAD4 #86CEE0

Accessibility & contrast

On white

3.08

#309FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.81

#309FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309FBC

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309FBC	#FFFFFF	#000000	##000000
##309FBC	1.00	3.08	6.81	6.81
#FFFFFF	3.08	1.00	21.00	21.00
#000000	6.81	21.00	1.00	1.00
##000000	6.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D9BBE

Deuteranopia (green-blind)

#7A8DBC

Tritanopia (blue-blind)

#00A9A8

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #309fbc;
/* rgb */ color: rgb(48, 159, 188);
/* oklch */ color: oklch(65.4% 0.105 219.4);

Tailwind

colors: {
  custom: {
    50: '#7dbbd0',
    500: '#309fbc',
    950: '#000000',
  },
}

SCSS

$custom: #309fbc;
$custom-light: #7dbbd0;
$custom-dark: #000000;

JSON

{
  "hex": "#309fbc",
  "rgb": {
    "r": 48,
    "g": 159,
    "b": 188
  },
  "hsl": {
    "h": 192.429,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.65384,
    "c": 0.10494,
    "h": 219.4
  },
  "luminance": 0.29055
}

Semantic roles & 50–950 ramp

primary

#309FBC

secondary

#CA8E7E

accent

#6645E3

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1214

muted

#7C8182

Preview Lab

Preview with #309FBC

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

Preview Lab → · Contrast checker → · Palette generator →