#4275E1#4275E1

#4275E1 is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.4% C 0.174 H 263.1°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX#4275E1
RGBrgb(66, 117, 225)
HSLhsl(221, 73%, 57%)
HSVhsv(221, 71%, 88%)
CMYKcmyk(70.7%, 48%, 0%, 11.8%)
CIE-LABlab(51.05, 18.87, -60.06)
CIE-LCHlch(51.05, 62.95, 287.44°)
OKLaboklab(58.45% -0.0209 -0.1723)
OKLCHoklch(58.45% 0.174 263.1)
XYZxyz(22.1938, 19.3147, 73.7780)
Luminance0.1932 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4275E1 #E1AE42
analogous
#42C4E1 #4275E1 #5F42E1
triadic
#4275E1 #E14275 #75E142
tetradic
#4275E1 #E142C4 #E1AE42 #42E15F
square
#4275E1 #E142C4 #E1AE42 #42E15F
split-complementary
#4275E1 #E15F42 #C4E142
monochromatic
#173E92 #1F55C6 #4275E1 #779CE9 #ACC2F2

Accessibility & contrast

On white

4.32
#4275E1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.86
#4275E1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275E1
4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4275E1#FFFFFF#000000##000000
##4275E11.004.324.864.86
#FFFFFF4.321.0021.0021.00
#0000004.8621.001.001.00
##0000004.8621.001.001.00

Color blindness preview

Protanopia (red-blind)
#3981E5
Deuteranopia (green-blind)
#0573DF
Tritanopia (blue-blind)
#008EA0
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #4275e1;
/* rgb */ color: rgb(66, 117, 225);
/* oklch */ color: oklch(58.4% 0.174 263.1);
Tailwind
colors: {
  custom: {
    50: '#899ceb',
    500: '#4275e1',
    950: '#000000',
  },
}
SCSS
$custom: #4275e1;
$custom-light: #899ceb;
$custom-dark: #000000;
JSON
{
  "hex": "#4275e1",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 225
  },
  "hsl": {
    "h": 220.755,
    "s": 72.603,
    "l": 57.059
  },
  "oklch": {
    "l": 0.58447,
    "c": 0.17359,
    "h": 263.1
  },
  "luminance": 0.19317
}

Semantic roles & 50–950 ramp

primary
#4275E1
secondary
#E0CB9F
accent
#B538EF
background
#F9F9FE
surface
#F1F2FD
border
#CBCCD5
text
#0D0E16
muted
#7E7E84

Preview Lab

Preview with #4275E1

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

Preview Lab → · Contrast checker → · Palette generator →

#4275E1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva