#307DB1#307DB1

#307DB1 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.110 H 242.1°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX#307DB1
RGBrgb(48, 125, 177)
HSLhsl(204, 57%, 44%)
HSVhsv(204, 73%, 69%)
CMYKcmyk(72.9%, 29.4%, 0%, 30.6%)
CIE-LABlab(50.06, -5.90, -34.28)
CIE-LCHlch(50.06, 34.79, 260.24°)
OKLaboklab(56.64% -0.0513 -0.0969)
OKLCHoklch(56.64% 0.11 242.1)
XYZxyz(16.4853, 18.4681, 44.2823)
Luminance0.1847 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#307DB1 #B16430
analogous
#30B1A5 #307DB1 #303DB1
triadic
#307DB1 #B1307D #7DB130
tetradic
#307DB1 #A530B1 #B16430 #3DB130
square
#307DB1 #A530B1 #B16430 #3DB130
split-complementary
#307DB1 #B1303D #B1A530
monochromatic
#163951 #235B81 #307DB1 #4F9CCF #7FB7DC

Accessibility & contrast

On white

4.47
#307DB1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.69
#307DB1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307DB1
4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##307DB1#FFFFFF#000000##000000
##307DB11.004.474.694.69
#FFFFFF4.471.0021.0021.00
#0000004.6921.001.001.00
##0000004.6921.001.001.00

Color blindness preview

Protanopia (red-blind)
#657EB3
Deuteranopia (green-blind)
#5372B0
Tritanopia (blue-blind)
#008A8F
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #307db1;
/* rgb */ color: rgb(48, 125, 177);
/* oklch */ color: oklch(56.6% 0.110 242.1);
Tailwind
colors: {
  custom: {
    50: '#79a2c8',
    500: '#307db1',
    950: '#000000',
  },
}
SCSS
$custom: #307db1;
$custom-light: #79a2c8;
$custom-dark: #000000;
JSON
{
  "hex": "#307db1",
  "rgb": {
    "r": 48,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 204.186,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.56637,
    "c": 0.10968,
    "h": 242.1
  },
  "luminance": 0.1847
}

Semantic roles & 50–950 ramp

primary
#307DB1
secondary
#C59778
accent
#8547E1
background
#F7F9FC
surface
#EEF2F8
border
#C9CCD1
text
#0A0F13
muted
#7C7E82

Preview Lab

Preview with #307DB1

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

Preview Lab → · Contrast checker → · Palette generator →

#307DB1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva