#4272DD#4272DD

#4272DD is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.6% C 0.172 H 263.7°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#4272DD
RGB	rgb(66, 114, 221)
HSL	hsl(221, 70%, 56%)
HSV	hsv(221, 70%, 87%)
CMYK	cmyk(70.1%, 48.4%, 0%, 13.3%)
CIE-LAB	lab(49.99, 19.31, -59.51)
CIE-LCH	lch(49.99, 62.56, 287.98°)
OKLab	oklab(57.55% -0.0188 -0.1708)
OKLCH	oklch(57.55% 0.172 263.7)
XYZ	xyz(21.3106, 18.4111, 70.8232)
Luminance	0.1841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4272DD #DDAD42

analogous

#42C0DD #4272DD #6042DD

triadic

#4272DD #DD4272 #72DD42

tetradic

#4272DD #DD42C0 #DDAD42 #42DD60

square

#4272DD #DD42C0 #DDAD42 #42DD60

split-complementary

#4272DD #DD6042 #C0DD42

monochromatic

#193D8C #2253BF #4272DD #7699E6 #AABFF0

Accessibility & contrast

On white

4.48

#4272DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#4272DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4272DD

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4272DD	#FFFFFF	#000000	##000000
##4272DD	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#367EE1

Deuteranopia (green-blind)

#0070DB

Tritanopia (blue-blind)

#008B9D

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4272dd;
/* rgb */ color: rgb(66, 114, 221);
/* oklch */ color: oklch(57.6% 0.172 263.7);

Tailwind

colors: {
  custom: {
    50: '#889ae8',
    500: '#4272dd',
    950: '#000000',
  },
}

SCSS

$custom: #4272dd;
$custom-light: #889ae8;
$custom-dark: #000000;

JSON

{
  "hex": "#4272dd",
  "rgb": {
    "r": 66,
    "g": 114,
    "b": 221
  },
  "hsl": {
    "h": 221.419,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.57553,
    "c": 0.17181,
    "h": 263.7
  },
  "luminance": 0.18413
}

Semantic roles & 50–950 ramp

primary

#4272DD

secondary

#DDCA9D

accent

#B63BEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4272DD

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

Preview Lab → · Contrast checker → · Palette generator →