#307DB9#307DB9

#307DB9 is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.119 H 245.8°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX#307DB9
RGBrgb(48, 125, 185)
HSLhsl(206, 59%, 46%)
HSVhsv(206, 74%, 73%)
CMYKcmyk(74.1%, 32.4%, 0%, 27.5%)
CIE-LABlab(50.45, -3.02, -38.29)
CIE-LCHlch(50.45, 38.41, 265.49°)
OKLaboklab(57.07% -0.0489 -0.1086)
OKLCHoklch(57.07% 0.119 245.8)
XYZxyz(17.3061, 18.7964, 48.6055)
Luminance0.1880 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#307DB9 #B96C30
analogous
#30B9B0 #307DB9 #3039B9
triadic
#307DB9 #B9307D #7DB930
tetradic
#307DB9 #B030B9 #B96C30 #39B930
square
#307DB9 #B030B9 #B96C30 #39B930
split-complementary
#307DB9 #B93039 #B9B030
monochromatic
#173B58 #235C88 #307DB9 #549BD3 #84B7DF

Accessibility & contrast

On white

4.41
#307DB9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.76
#307DB9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DB9
4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##307DB9#FFFFFF#000000##000000
##307DB91.004.414.764.76
#FFFFFF4.411.0021.0021.00
#0000004.7621.001.001.00
##0000004.7621.001.001.00

Color blindness preview

Protanopia (red-blind)
#627FBC
Deuteranopia (green-blind)
#4E72B8
Tritanopia (blue-blind)
#008B92
Achromatopsia (no color)
#787878

Design tokens & code

CSS
--color: #307db9;
/* rgb */ color: rgb(48, 125, 185);
/* oklch */ color: oklch(57.1% 0.119 245.8);
Tailwind
colors: {
  custom: {
    50: '#7aa2ce',
    500: '#307db9',
    950: '#000000',
  },
}
SCSS
$custom: #307db9;
$custom-light: #7aa2ce;
$custom-dark: #000000;
JSON
{
  "hex": "#307db9",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 185
  },
  "hsl": {
    "h": 206.277,
    "s": 58.798,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57072,
    "c": 0.11907,
    "h": 245.8
  },
  "luminance": 0.18798
}

Semantic roles & 50–950 ramp

primary
#307DB9
secondary
#C99E7C
accent
#8A46E2
background
#F8F9FC
surface
#EFF2F9
border
#CACCD2
text
#0B0F13
muted
#7C7E82

Preview Lab

Preview with #307DB9

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

Preview Lab → · Contrast checker → · Palette generator →

#307DB9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva