#4272DB#4272DB

#4272DB is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.4% C 0.169 H 263.5°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4272DB
RGB	rgb(66, 114, 219)
HSL	hsl(221, 68%, 56%)
HSV	hsv(221, 70%, 86%)
CMYK	cmyk(69.9%, 47.9%, 0%, 14.1%)
CIE-LAB	lab(49.86, 18.59, -58.58)
CIE-LCH	lch(49.86, 61.46, 287.61°)
OKLab	oklab(57.42% -0.0191 -0.168)
OKLCH	oklch(57.42% 0.169 263.5)
XYZ	xyz(21.0457, 18.3052, 69.4282)
Luminance	0.1831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4272DB #DBAB42

analogous

#42BFDB #4272DB #5E42DB

triadic

#4272DB #DB4272 #72DB42

tetradic

#4272DB #DB42BF #DBAB42 #42DB5E

square

#4272DB #DB42BF #DBAB42 #42DB5E

split-complementary

#4272DB #DB5E42 #BFDB42

monochromatic

#1A3D89 #2454BC #4272DB #7598E5 #A9BFEF

Accessibility & contrast

On white

4.51

#4272DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#4272DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4272DB

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4272DB	#FFFFFF	#000000	##000000
##4272DB	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397EDF

Deuteranopia (green-blind)

#0B70D9

Tritanopia (blue-blind)

#008B9C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4272db;
/* rgb */ color: rgb(66, 114, 219);
/* oklch */ color: oklch(57.4% 0.169 263.5);

Tailwind

colors: {
  custom: {
    50: '#889ae7',
    500: '#4272db',
    950: '#000000',
  },
}

SCSS

$custom: #4272db;
$custom-light: #889ae7;
$custom-dark: #000000;

JSON

{
  "hex": "#4272db",
  "rgb": {
    "r": 66,
    "g": 114,
    "b": 219
  },
  "hsl": {
    "h": 221.176,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.57416,
    "c": 0.16912,
    "h": 263.5
  },
  "luminance": 0.18307
}

Semantic roles & 50–950 ramp

primary

#4272DB

secondary

#DCC89D

accent

#B43DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4272DB

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

Preview Lab → · Contrast checker → · Palette generator →