#4272BC#4272BC

#4272BC is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.4% C 0.127 H 258.8°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#4272BC
RGB	rgb(66, 114, 188)
HSL	hsl(216, 48%, 50%)
HSV	hsv(216, 65%, 74%)
CMYK	cmyk(64.9%, 39.4%, 0%, 26.3%)
CIE-LAB	lab(48.04, 7.55, -43.79)
CIE-LCH	lch(48.04, 44.44, 279.79°)
OKLab	oklab(55.42% -0.0247 -0.1246)
OKLCH	oklch(55.42% 0.127 258.8)
XYZ	xyz(17.3379, 16.8221, 49.9005)
Luminance	0.1682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4272BC #BC8C42

analogous

#42AFBC #4272BC #4F42BC

triadic

#4272BC #BC4272 #72BC42

tetradic

#4272BC #BC42AF #BC8C42 #42BC4F

square

#4272BC #BC42AF #BC8C42 #42BC4F

split-complementary

#4272BC #BC4F42 #AFBC42

monochromatic

#223B61 #32578F #4272BC #6F94CC #9CB5DC

Accessibility & contrast

On white

4.81

#4272BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#4272BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4272BC

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4272BC	#FFFFFF	#000000	##FFFFFF
##4272BC	1.00	4.81	4.36	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5178BF

Deuteranopia (green-blind)

#3F6DBA

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4272bc;
/* rgb */ color: rgb(66, 114, 188);
/* oklch */ color: oklch(55.4% 0.127 258.8);

Tailwind

colors: {
  custom: {
    50: '#829ad0',
    500: '#4272bc',
    950: '#000000',
  },
}

SCSS

$custom: #4272bc;
$custom-light: #829ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4272bc",
  "rgb": {
    "r": 66,
    "g": 114,
    "b": 188
  },
  "hsl": {
    "h": 216.393,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.55416,
    "c": 0.12701,
    "h": 258.8
  },
  "luminance": 0.16824
}

Semantic roles & 50–950 ramp

primary

#4272BC

secondary

#C9B391

accent

#A250D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4272BC

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

Preview Lab → · Contrast checker → · Palette generator →