#4378D9#4378D9

#4378D9 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.6% C 0.159 H 261.3°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX#4378D9
RGBrgb(67, 120, 217)
HSLhsl(219, 66%, 56%)
HSVhsv(219, 69%, 85%)
CMYKcmyk(69.1%, 44.7%, 0%, 14.9%)
CIE-LABlab(51.42, 14.29, -54.95)
CIE-LCHlch(51.42, 56.78, 284.57°)
OKLaboklab(58.58% -0.0239 -0.1572)
OKLCHoklch(58.58% 0.159 261.3)
XYZxyz(21.5511, 19.6338, 68.2861)
Luminance0.1964 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4378D9 #D9A443
analogous
#43C3D9 #4378D9 #5943D9
triadic
#4378D9 #D94378 #78D943
tetradic
#4378D9 #D943C3 #D9A443 #43D959
square
#4378D9 #D943C3 #D9A443 #43D959
split-complementary
#4378D9 #D95943 #C3D943
monochromatic
#1B4186 #255AB9 #4378D9 #769DE3 #A9C1EE

Accessibility & contrast

On white

4.26
#4378D9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.93
#4378D9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378D9
4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4378D9#FFFFFF#000000##000000
##4378D91.004.264.934.93
#FFFFFF4.261.0021.0021.00
#0000004.9321.001.001.00
##0000004.9321.001.001.00

Color blindness preview

Protanopia (red-blind)
#4882DD
Deuteranopia (green-blind)
#2B74D7
Tritanopia (blue-blind)
#008F9E
Achromatopsia (no color)
#7B7B7B

Design tokens & code

CSS
--color: #4378d9;
/* rgb */ color: rgb(67, 120, 217);
/* oklch */ color: oklch(58.6% 0.159 261.3);
Tailwind
colors: {
  custom: {
    50: '#889ee5',
    500: '#4378d9',
    950: '#000000',
  },
}
SCSS
$custom: #4378d9;
$custom-light: #889ee5;
$custom-dark: #000000;
JSON
{
  "hex": "#4378d9",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 217
  },
  "hsl": {
    "h": 218.8,
    "s": 66.372,
    "l": 55.686
  },
  "oklch": {
    "l": 0.58582,
    "c": 0.15906,
    "h": 261.3
  },
  "luminance": 0.19636
}

Semantic roles & 50–950 ramp

primary
#4378D9
secondary
#DBC59D
accent
#AD3FE9
background
#F9F9FE
surface
#F1F2FC
border
#CBCCD5
text
#0D0E16
muted
#7E7E84

Preview Lab

Preview with #4378D9

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

Preview Lab → · Contrast checker → · Palette generator →

#4378D9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva