#4243AE#4243AE

#4243AE is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.8% C 0.166 H 276.9°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#4243AE
RGB	rgb(66, 67, 174)
HSL	hsl(239, 45%, 47%)
HSV	hsv(239, 62%, 68%)
CMYK	cmyk(62.1%, 61.5%, 0%, 31.8%)
CIE-LAB	lab(34.45, 32.61, -57.43)
CIE-LCH	lch(34.45, 66.04, 299.58°)
OKLab	oklab(44.82% 0.02 -0.1653)
OKLCH	oklch(44.82% 0.166 276.9)
XYZ	xyz(11.8914, 8.2276, 40.9976)
Luminance	0.0823 (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

#4243AE #AEAD42

analogous

#4279AE #4243AE #7742AE

triadic

#4243AE #AE4243 #43AE42

tetradic

#4243AE #AE4279 #AEAD42 #42AE77

square

#4243AE #AE4279 #AEAD42 #42AE77

split-complementary

#4243AE #AE7742 #79AE42

monochromatic

#202155 #313282 #4243AE #6868C6 #9495D6

Accessibility & contrast

On white

7.94

#4243AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#4243AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243AE

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243AE	#FFFFFF	#000000	##FFFFFF
##4243AE	1.00	7.94	2.65	7.94
#FFFFFF	7.94	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B1

Deuteranopia (green-blind)

#004CAC

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #4243ae;
/* rgb */ color: rgb(66, 67, 174);
/* oklch */ color: oklch(44.8% 0.166 276.9);

Tailwind

colors: {
  custom: {
    50: '#8277c7',
    500: '#4243ae',
    950: '#000000',
  },
}

SCSS

$custom: #4243ae;
$custom-light: #8277c7;
$custom-dark: #000000;

JSON

{
  "hex": "#4243ae",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 174
  },
  "hsl": {
    "h": 239.444,
    "s": 45,
    "l": 47.059
  },
  "oklch": {
    "l": 0.44819,
    "c": 0.16647,
    "h": 276.9
  },
  "luminance": 0.08229
}

Semantic roles & 50–950 ramp

primary

#4243AE

secondary

#C2C18A

accent

#D353D5

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #4243AE

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

Preview Lab → · Contrast checker → · Palette generator →