#4272BF#4272BF

#4272BF is a mid, vivid blue. Relative luminance 0.170; OKLCH L 55.6% C 0.131 H 259.4°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#4272BF
RGB	rgb(66, 114, 191)
HSL	hsl(217, 49%, 50%)
HSV	hsv(217, 65%, 75%)
CMYK	cmyk(65.4%, 40.3%, 0%, 25.1%)
CIE-LAB	lab(48.20, 8.61, -45.26)
CIE-LCH	lch(48.20, 46.07, 280.77°)
OKLab	oklab(55.6% -0.024 -0.1289)
OKLCH	oklch(55.6% 0.131 259.4)
XYZ	xyz(17.6647, 16.9528, 51.6214)
Luminance	0.1695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4272BF #BF8F42

analogous

#42B0BF #4272BF #5042BF

triadic

#4272BF #BF4272 #72BF42

tetradic

#4272BF #BF42B0 #BF8F42 #42BF50

square

#4272BF #BF42B0 #BF8F42 #42BF50

split-complementary

#4272BF #BF5042 #B0BF42

monochromatic

#223C65 #325792 #4272BF #7094CE #9DB6DE

Accessibility & contrast

On white

4.78

#4272BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#4272BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4272BF

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4272BF	#FFFFFF	#000000	##FFFFFF
##4272BF	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F79C2

Deuteranopia (green-blind)

#3D6DBD

Tritanopia (blue-blind)

#00848F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4272bf;
/* rgb */ color: rgb(66, 114, 191);
/* oklch */ color: oklch(55.6% 0.131 259.4);

Tailwind

colors: {
  custom: {
    50: '#839ad3',
    500: '#4272bf',
    950: '#000000',
  },
}

SCSS

$custom: #4272bf;
$custom-light: #839ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#4272bf",
  "rgb": {
    "r": 66,
    "g": 114,
    "b": 191
  },
  "hsl": {
    "h": 216.96,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.55598,
    "c": 0.13111,
    "h": 259.4
  },
  "luminance": 0.16954
}

Semantic roles & 50–950 ramp

primary

#4272BF

secondary

#CAB593

accent

#A44FD9

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4272BF

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

Preview Lab → · Contrast checker → · Palette generator →