#4247AD#4247AD

#4247AD is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.5% C 0.160 H 275.9°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#4247AD
RGB	rgb(66, 71, 173)
HSL	hsl(237, 45%, 47%)
HSV	hsv(237, 62%, 68%)
CMYK	cmyk(61.8%, 59%, 0%, 32.2%)
CIE-LAB	lab(35.36, 29.72, -55.36)
CIE-LCH	lch(35.36, 62.83, 298.23°)
OKLab	oklab(45.47% 0.0164 -0.1591)
OKLCH	oklch(45.47% 0.16 275.9)
XYZ	xyz(12.0404, 8.6809, 40.5682)
Luminance	0.0868 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4247AD #ADA842

analogous

#427DAD #4247AD #7342AD

triadic

#4247AD #AD4247 #47AD42

tetradic

#4247AD #AD427D #ADA842 #42AD73

square

#4247AD #AD427D #ADA842 #42AD73

split-complementary

#4247AD #AD7342 #7DAD42

monochromatic

#202354 #313581 #4247AD #676CC5 #9397D6

Accessibility & contrast

On white

7.67

#4247AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#4247AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4247AD

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4247AD	#FFFFFF	#000000	##FFFFFF
##4247AD	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B0

Deuteranopia (green-blind)

#004FAB

Tritanopia (blue-blind)

#006073

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4247ad;
/* rgb */ color: rgb(66, 71, 173);
/* oklch */ color: oklch(45.5% 0.160 275.9);

Tailwind

colors: {
  custom: {
    50: '#817ac6',
    500: '#4247ad',
    950: '#000000',
  },
}

SCSS

$custom: #4247ad;
$custom-light: #817ac6;
$custom-dark: #000000;

JSON

{
  "hex": "#4247ad",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 173
  },
  "hsl": {
    "h": 237.196,
    "s": 44.77,
    "l": 46.863
  },
  "oklch": {
    "l": 0.45466,
    "c": 0.15997,
    "h": 275.9
  },
  "luminance": 0.08682
}

Semantic roles & 50–950 ramp

primary

#4247AD

secondary

#C1BF89

accent

#CE53D4

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #4247AD

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

Preview Lab → · Contrast checker → · Palette generator →