#307BBD#307BBD

#307BBD is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 56.8% C 0.126 H 248.6°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX#307BBD
RGBrgb(48, 123, 189)
HSLhsl(208, 59%, 46%)
HSVhsv(208, 75%, 74%)
CMYKcmyk(74.6%, 34.9%, 0%, 25.9%)
CIE-LABlab(50.06, -0.37, -41.20)
CIE-LCHlch(50.06, 41.21, 269.49°)
OKLaboklab(56.83% -0.0458 -0.1171)
OKLCHoklch(56.83% 0.126 248.6)
XYZxyz(17.4837, 18.4664, 50.7772)
Luminance0.1847 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#307BBD #BD7230
analogous
#30BDB9 #307BBD #3035BD
triadic
#307BBD #BD307B #7BBD30
tetradic
#307BBD #B930BD #BD7230 #35BD30
square
#307BBD #B930BD #BD7230 #35BD30
split-complementary
#307BBD #BD3035 #BDB930
monochromatic
#173B5B #245B8C #307BBD #5699D4 #87B7E0

Accessibility & contrast

On white

4.47
#307BBD on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.69
#307BBD on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BBD
4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##307BBD#FFFFFF#000000##000000
##307BBD1.004.474.694.69
#FFFFFF4.471.0021.0021.00
#0000004.6921.001.001.00
##0000004.6921.001.001.00

Color blindness preview

Protanopia (red-blind)
#5D7EC0
Deuteranopia (green-blind)
#4871BC
Tritanopia (blue-blind)
#008B93
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #307bbd;
/* rgb */ color: rgb(48, 123, 189);
/* oklch */ color: oklch(56.8% 0.126 248.6);
Tailwind
colors: {
  custom: {
    50: '#7ba0d1',
    500: '#307bbd',
    950: '#000000',
  },
}
SCSS
$custom: #307bbd;
$custom-light: #7ba0d1;
$custom-dark: #000000;
JSON
{
  "hex": "#307bbd",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 189
  },
  "hsl": {
    "h": 208.085,
    "s": 59.494,
    "l": 46.471
  },
  "oklch": {
    "l": 0.56831,
    "c": 0.12577,
    "h": 248.6
  },
  "luminance": 0.18468
}

Semantic roles & 50–950 ramp

primary
#307BBD
secondary
#CAA27F
accent
#8F45E3
background
#F8F9FC
surface
#EFF2F9
border
#CACCD2
text
#0B0E14
muted
#7C7E82

Preview Lab

Preview with #307BBD

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

Preview Lab → · Contrast checker → · Palette generator →

#307BBD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva