#307DBA#307DBA

#307DBA is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.120 H 246.2°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX#307DBA
RGBrgb(48, 125, 186)
HSLhsl(207, 59%, 46%)
HSVhsv(207, 74%, 73%)
CMYKcmyk(74.2%, 32.8%, 0%, 27.1%)
CIE-LABlab(50.50, -2.66, -38.78)
CIE-LCHlch(50.50, 38.87, 266.08°)
OKLaboklab(57.13% -0.0486 -0.11)
OKLCHoklch(57.13% 0.12 246.2)
XYZxyz(17.4121, 18.8388, 49.1634)
Luminance0.1884 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#307DBA #BA6D30
analogous
#30BAB2 #307DBA #3038BA
triadic
#307DBA #BA307D #7DBA30
tetradic
#307DBA #B230BA #BA6D30 #38BA30
square
#307DBA #B230BA #BA6D30 #38BA30
split-complementary
#307DBA #BA3038 #BAB230
monochromatic
#173C59 #235C89 #307DBA #549BD3 #85B7DF

Accessibility & contrast

On white

4.40
#307DBA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.77
#307DBA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DBA
4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##307DBA#FFFFFF#000000##000000
##307DBA1.004.404.774.77
#FFFFFF4.401.0021.0021.00
#0000004.7721.001.001.00
##0000004.7721.001.001.00

Color blindness preview

Protanopia (red-blind)
#617FBD
Deuteranopia (green-blind)
#4E72B9
Tritanopia (blue-blind)
#008C93
Achromatopsia (no color)
#787878

Design tokens & code

CSS
--color: #307dba;
/* rgb */ color: rgb(48, 125, 186);
/* oklch */ color: oklch(57.1% 0.120 246.2);
Tailwind
colors: {
  custom: {
    50: '#7ba2cf',
    500: '#307dba',
    950: '#000000',
  },
}
SCSS
$custom: #307dba;
$custom-light: #7ba2cf;
$custom-dark: #000000;
JSON
{
  "hex": "#307dba",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 186
  },
  "hsl": {
    "h": 206.522,
    "s": 58.974,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57128,
    "c": 0.12027,
    "h": 246.2
  },
  "luminance": 0.18841
}

Semantic roles & 50–950 ramp

primary
#307DBA
secondary
#C99E7D
accent
#8B46E2
background
#F8F9FC
surface
#EFF2F9
border
#CACCD2
text
#0B0F14
muted
#7C7E82

Preview Lab

Preview with #307DBA

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

Preview Lab → · Contrast checker → · Palette generator →

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