#4273C9#4273C9

#4273C9 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.4% C 0.144 H 260.8°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX#4273C9
RGBrgb(66, 115, 201)
HSLhsl(218, 56%, 52%)
HSVhsv(218, 67%, 79%)
CMYKcmyk(67.2%, 42.8%, 0%, 21.2%)
CIE-LABlab(49.05, 11.54, -49.65)
CIE-LCHlch(49.05, 50.97, 283.08°)
OKLaboklab(56.44% -0.023 -0.1417)
OKLCHoklch(56.44% 0.144 260.8)
XYZxyz(18.9164, 17.6349, 57.6540)
Luminance0.1764 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4273C9 #C99842
analogous
#42B7C9 #4273C9 #5442C9
triadic
#4273C9 #C94273 #73C942
tetradic
#4273C9 #C942B7 #C99842 #42C954
square
#4273C9 #C942B7 #C99842 #42C954
split-complementary
#4273C9 #C95442 #B7C942
monochromatic
#203D70 #2E57A0 #4273C9 #7296D7 #A1BAE4

Accessibility & contrast

On white

4.64
#4273C9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.53
#4273C9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #4273C9
4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4273C9#FFFFFF#000000##FFFFFF
##4273C91.004.644.534.64
#FFFFFF4.641.0021.001.00
#0000004.5321.001.0021.00
##FFFFFF4.641.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4A7BCC
Deuteranopia (green-blind)
#346FC7
Tritanopia (blue-blind)
#008794
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #4273c9;
/* rgb */ color: rgb(66, 115, 201);
/* oklch */ color: oklch(56.4% 0.144 260.8);
Tailwind
colors: {
  custom: {
    50: '#859ada',
    500: '#4273c9',
    950: '#000000',
  },
}
SCSS
$custom: #4273c9;
$custom-light: #859ada;
$custom-dark: #000000;
JSON
{
  "hex": "#4273c9",
  "rgb": {
    "r": 66,
    "g": 115,
    "b": 201
  },
  "hsl": {
    "h": 218.222,
    "s": 55.556,
    "l": 52.353
  },
  "oklch": {
    "l": 0.56439,
    "c": 0.1436,
    "h": 260.8
  },
  "luminance": 0.17637
}

Semantic roles & 50–950 ramp

primary
#4273C9
secondary
#D1BB96
accent
#A849DF
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #4273C9

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

Preview Lab → · Contrast checker → · Palette generator →

#4273C9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva