#309EBC#309EBC

#309EBC is a light, moderate cyan. Relative luminance 0.287; OKLCH L 65.1% C 0.105 H 220.3°. Best body text is #000000 at 6.74:1 contrast (WCAG AA passes).

Color values

HEX#309EBC
RGBrgb(48, 158, 188)
HSLhsl(193, 59%, 46%)
HSVhsv(193, 74%, 74%)
CMYKcmyk(74.5%, 16%, 0%, 26.3%)
CIE-LABlab(60.53, -20.46, -24.31)
CIE-LCHlch(60.53, 31.78, 229.92°)
OKLaboklab(65.14% -0.0801 -0.068)
OKLCHoklch(65.14% 0.105 220.3)
XYZxyz(22.5191, 28.7103, 51.9220)
Luminance0.2871 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#309EBC #BC4E30
analogous
#30BC94 #309EBC #3058BC
triadic
#309EBC #BC309E #9EBC30
tetradic
#309EBC #9430BC #BC4E30 #58BC30
square
#309EBC #9430BC #BC4E30 #58BC30
split-complementary
#309EBC #BC3058 #BC9430
monochromatic
#174C5A #24758B #309EBC #55B9D4 #86CDE0

Accessibility & contrast

On white

3.11
#309EBC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.74
#309EBC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309EBC
6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##309EBC#FFFFFF#000000##000000
##309EBC1.003.116.746.74
#FFFFFF3.111.0021.0021.00
#0000006.7421.001.001.00
##0000006.7421.001.001.00

Color blindness preview

Protanopia (red-blind)
#8C9ABE
Deuteranopia (green-blind)
#798CBC
Tritanopia (blue-blind)
#00A8A8
Achromatopsia (no color)
#929292

Design tokens & code

CSS
--color: #309ebc;
/* rgb */ color: rgb(48, 158, 188);
/* oklch */ color: oklch(65.1% 0.105 220.3);
Tailwind
colors: {
  custom: {
    50: '#7dbad0',
    500: '#309ebc',
    950: '#000000',
  },
}
SCSS
$custom: #309ebc;
$custom-light: #7dbad0;
$custom-dark: #000000;
JSON
{
  "hex": "#309ebc",
  "rgb": {
    "r": 48,
    "g": 158,
    "b": 188
  },
  "hsl": {
    "h": 192.857,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.6514,
    "c": 0.10504,
    "h": 220.3
  },
  "luminance": 0.28713
}

Semantic roles & 50–950 ramp

primary
#309EBC
secondary
#CA8E7E
accent
#6745E3
background
#F8FBFC
surface
#EFF6F9
border
#CAD0D2
text
#0B1114
muted
#7C8082

Preview Lab

Preview with #309EBC

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

Preview Lab → · Contrast checker → · Palette generator →

#309EBC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva