#427DD9#427DD9

#427DD9 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.6% C 0.154 H 259.0°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX#427DD9
RGBrgb(66, 125, 217)
HSLhsl(217, 67%, 55%)
HSVhsv(217, 70%, 85%)
CMYKcmyk(69.6%, 42.4%, 0%, 14.9%)
CIE-LABlab(52.77, 11.05, -52.80)
CIE-LCHlch(52.77, 53.95, 281.83°)
OKLaboklab(59.61% -0.0292 -0.1509)
OKLCHoklch(59.61% 0.154 259)
XYZxyz(22.1002, 20.8329, 68.4886)
Luminance0.2084 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#427DD9 #D99E42
analogous
#42C9D9 #427DD9 #5242D9
triadic
#427DD9 #D9427D #7DD942
tetradic
#427DD9 #D942C9 #D99E42 #42D952
square
#427DD9 #D942C9 #D99E42 #42D952
split-complementary
#427DD9 #D95242 #C9D942
monochromatic
#1B4586 #255FB9 #427DD9 #75A0E3 #A8C3ED

Accessibility & contrast

On white

4.06
#427DD9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.17
#427DD9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DD9
5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##427DD9#FFFFFF#000000##000000
##427DD91.004.065.175.17
#FFFFFF4.061.0021.0021.00
#0000005.1721.001.001.00
##0000005.1721.001.001.00

Color blindness preview

Protanopia (red-blind)
#5185DD
Deuteranopia (green-blind)
#3777D7
Tritanopia (blue-blind)
#0092A0
Achromatopsia (no color)
#7E7E7E

Design tokens & code

CSS
--color: #427dd9;
/* rgb */ color: rgb(66, 125, 217);
/* oklch */ color: oklch(59.6% 0.154 259.0);
Tailwind
colors: {
  custom: {
    50: '#87a2e5',
    500: '#427dd9',
    950: '#000000',
  },
}
SCSS
$custom: #427dd9;
$custom-light: #87a2e5;
$custom-dark: #000000;
JSON
{
  "hex": "#427dd9",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 217
  },
  "hsl": {
    "h": 216.556,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59609,
    "c": 0.15367,
    "h": 259
  },
  "luminance": 0.20835
}

Semantic roles & 50–950 ramp

primary
#427DD9
secondary
#DBC29C
accent
#A73EE9
background
#F9F9FE
surface
#F1F2FC
border
#CBCCD5
text
#0D0F16
muted
#7E7E84

Preview Lab

Preview with #427DD9

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

Preview Lab → · Contrast checker → · Palette generator →

#427DD9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva