#4239BD#4239BD

#4239BD is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.5% C 0.198 H 277.7°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#4239BD
RGB	rgb(66, 57, 189)
HSL	hsl(244, 54%, 48%)
HSV	hsv(244, 70%, 74%)
CMYK	cmyk(65.1%, 69.8%, 0%, 25.9%)
CIE-LAB	lab(33.47, 43.66, -67.92)
CIE-LCH	lch(33.47, 80.74, 302.73°)
OKLab	oklab(44.51% 0.0266 -0.196)
OKLCH	oklch(44.51% 0.198 277.7)
XYZ	xyz(12.8922, 7.7576, 48.9522)
Luminance	0.0776 (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

#4239BD #B4BD39

analogous

#3972BD #4239BD #8439BD

triadic

#4239BD #BD4239 #39BD42

tetradic

#4239BD #BD3972 #B4BD39 #39BD84

square

#4239BD #BD3972 #B4BD39 #39BD84

split-complementary

#4239BD #BD8439 #72BD39

monochromatic

#211D5F #322B8E #4239BD #6B63D0 #9792DE

Accessibility & contrast

On white

8.23

#4239BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#4239BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239BD

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239BD	#FFFFFF	#000000	##FFFFFF
##4239BD	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C1

Deuteranopia (green-blind)

#0049BB

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4239bd;
/* rgb */ color: rgb(66, 57, 189);
/* oklch */ color: oklch(44.5% 0.198 277.7);

Tailwind

colors: {
  custom: {
    50: '#8671d2',
    500: '#4239bd',
    950: '#000000',
  },
}

SCSS

$custom: #4239bd;
$custom-light: #8671d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4239bd",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 189
  },
  "hsl": {
    "h": 244.091,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44505,
    "c": 0.19782,
    "h": 277.7
  },
  "luminance": 0.07759
}

Semantic roles & 50–950 ramp

primary

#4239BD

secondary

#C5C989

accent

#DD4BD3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4239BD

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

Preview Lab → · Contrast checker → · Palette generator →