#309EB7#309EB7

#309EB7 is a light, moderate cyan. Relative luminance 0.285; OKLCH L 64.9% C 0.102 H 216.5°. Best body text is #000000 at 6.70:1 contrast (WCAG AA passes).

Color values

HEX#309EB7
RGBrgb(48, 158, 183)
HSLhsl(191, 58%, 45%)
HSVhsv(191, 74%, 72%)
CMYKcmyk(73.8%, 13.7%, 0%, 28.2%)
CIE-LABlab(60.34, -22.09, -21.79)
CIE-LCHlch(60.34, 31.03, 224.61°)
OKLaboklab(64.93% -0.0821 -0.0608)
OKLCHoklch(64.93% 0.102 216.5)
XYZxyz(21.9894, 28.4984, 49.1324)
Luminance0.2850 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#309EB7 #B74930
analogous
#30B78C #309EB7 #305AB7
triadic
#309EB7 #B7309E #9EB730
tetradic
#309EB7 #8C30B7 #B74930 #5AB730
square
#309EB7 #8C30B7 #B74930 #5AB730
split-complementary
#309EB7 #B7305A #B78C30
monochromatic
#174A56 #237487 #309EB7 #52BAD2 #83CEDE

Accessibility & contrast

On white

3.13
#309EB7 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.70
#309EB7 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309EB7
6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##309EB7#FFFFFF#000000##000000
##309EB71.003.136.706.70
#FFFFFF3.131.0021.0021.00
#0000006.7021.001.001.00
##0000006.7021.001.001.00

Color blindness preview

Protanopia (red-blind)
#8D99B8
Deuteranopia (green-blind)
#7B8CB7
Tritanopia (blue-blind)
#00A7A6
Achromatopsia (no color)
#919191

Design tokens & code

CSS
--color: #309eb7;
/* rgb */ color: rgb(48, 158, 183);
/* oklch */ color: oklch(64.9% 0.102 216.5);
Tailwind
colors: {
  custom: {
    50: '#7cbbcc',
    500: '#309eb7',
    950: '#000000',
  },
}
SCSS
$custom: #309eb7;
$custom-light: #7cbbcc;
$custom-dark: #000000;
JSON
{
  "hex": "#309eb7",
  "rgb": {
    "r": 48,
    "g": 158,
    "b": 183
  },
  "hsl": {
    "h": 191.111,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.64926,
    "c": 0.10213,
    "h": 216.5
  },
  "luminance": 0.28501
}

Semantic roles & 50–950 ramp

primary
#309EB7
secondary
#C8897B
accent
#6346E2
background
#F8FBFC
surface
#EFF6F8
border
#CAD0D1
text
#0B1113
muted
#7C8082

Preview Lab

Preview with #309EB7

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

Preview Lab → · Contrast checker → · Palette generator →

#309EB7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva