#4D63BB#4D63BB

#4D63BB is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.7% C 0.140 H 270.4°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX#4D63BB
RGBrgb(77, 99, 187)
HSLhsl(228, 45%, 52%)
HSVhsv(228, 59%, 73%)
CMYKcmyk(58.8%, 47.1%, 0%, 26.7%)
CIE-LABlab(44.36, 18.69, -49.05)
CIE-LCHlch(44.36, 52.49, 290.87°)
OKLaboklab(52.72% 0.0011 -0.14)
OKLCHoklch(52.72% 0.14 270.4)
XYZxyz(16.4891, 14.0880, 48.8544)
Luminance0.1409 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4D63BB #BBA54D
analogous
#4D9ABB #4D63BB #6E4DBB
triadic
#4D63BB #BB4D63 #63BB4D
tetradic
#4D63BB #BB4D9A #BBA54D #4DBB6E
square
#4D63BB #BB4D9A #BBA54D #4DBB6E
split-complementary
#4D63BB #BB6E4D #9ABB4D
monochromatic
#273466 #384A93 #4D63BB #798ACC #A6B1DD

Accessibility & contrast

On white

5.50
#4D63BB on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.82
#4D63BB on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4D63BB
5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4D63BB#FFFFFF#000000##FFFFFF
##4D63BB1.005.503.825.50
#FFFFFF5.501.0021.001.00
#0000003.8221.001.0021.00
##FFFFFF5.501.0021.001.00

Color blindness preview

Protanopia (red-blind)
#396EBE
Deuteranopia (green-blind)
#2864B9
Tritanopia (blue-blind)
#007786
Achromatopsia (no color)
#696969

Design tokens & code

CSS
--color: #4d63bb;
/* rgb */ color: rgb(77, 99, 187);
/* oklch */ color: oklch(52.7% 0.140 270.4);
Tailwind
colors: {
  custom: {
    50: '#888fd0',
    500: '#4d63bb',
    950: '#000000',
  },
}
SCSS
$custom: #4d63bb;
$custom-light: #888fd0;
$custom-dark: #000000;
JSON
{
  "hex": "#4d63bb",
  "rgb": {
    "r": 77,
    "g": 99,
    "b": 187
  },
  "hsl": {
    "h": 228,
    "s": 44.715,
    "l": 51.765
  },
  "oklch": {
    "l": 0.52721,
    "c": 0.13999,
    "h": 270.4
  },
  "luminance": 0.14089
}

Semantic roles & 50–950 ramp

primary
#4D63BB
secondary
#CAC09A
accent
#BB53D4
background
#F8F8FC
surface
#F0F0F9
border
#CBCBD2
text
#0C0C14
muted
#7D7D82

Preview Lab

Preview with #4D63BB

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

Preview Lab → · Contrast checker → · Palette generator →

#4D63BB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva