#4279D0#4279D0

#4279D0 is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.2% C 0.146 H 259.2°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX#4279D0
RGBrgb(66, 121, 208)
HSLhsl(217, 60%, 54%)
HSVhsv(217, 68%, 82%)
CMYKcmyk(68.3%, 41.8%, 0%, 18.4%)
CIE-LABlab(51.13, 10.31, -50.31)
CIE-LCHlch(51.13, 51.36, 281.58°)
OKLaboklab(58.18% -0.0273 -0.1436)
OKLCHoklch(58.18% 0.146 259.2)
XYZxyz(20.4652, 19.3850, 62.3254)
Luminance0.1939 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4279D0 #D09942
analogous
#42C0D0 #4279D0 #5242D0
triadic
#4279D0 #D04279 #79D042
tetradic
#4279D0 #D042C0 #D09942 #42D052
square
#4279D0 #D042C0 #D09942 #42D052
split-complementary
#4279D0 #D05242 #C0D042
monochromatic
#1E4279 #2A5CAA #4279D0 #739CDC #A4BEE8

Accessibility & contrast

On white

4.31
#4279D0 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.88
#4279D0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4279D0
4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4279D0#FFFFFF#000000##000000
##4279D01.004.314.884.88
#FFFFFF4.311.0021.0021.00
#0000004.8821.001.001.00
##0000004.8821.001.001.00

Color blindness preview

Protanopia (red-blind)
#5081D3
Deuteranopia (green-blind)
#3974CE
Tritanopia (blue-blind)
#008D9A
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #4279d0;
/* rgb */ color: rgb(66, 121, 208);
/* oklch */ color: oklch(58.2% 0.146 259.2);
Tailwind
colors: {
  custom: {
    50: '#869fdf',
    500: '#4279d0',
    950: '#000000',
  },
}
SCSS
$custom: #4279d0;
$custom-light: #869fdf;
$custom-dark: #000000;
JSON
{
  "hex": "#4279d0",
  "rgb": {
    "r": 66,
    "g": 121,
    "b": 208
  },
  "hsl": {
    "h": 216.761,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58181,
    "c": 0.14618,
    "h": 259.2
  },
  "luminance": 0.19387
}

Semantic roles & 50–950 ramp

primary
#4279D0
secondary
#D5BE99
accent
#A644E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #4279D0

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

Preview Lab → · Contrast checker → · Palette generator →

#4279D0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva