#4239BE#4239BE

#4239BE is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.6% C 0.199 H 277.6°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#4239BE
RGB	rgb(66, 57, 190)
HSL	hsl(244, 54%, 48%)
HSV	hsv(244, 70%, 75%)
CMYK	cmyk(65.3%, 70%, 0%, 25.5%)
CIE-LAB	lab(33.57, 43.98, -68.35)
CIE-LCH	lch(33.57, 81.28, 302.76°)
OKLab	oklab(44.6% 0.0264 -0.1973)
OKLCH	oklch(44.6% 0.199 277.6)
XYZ	xyz(13.0011, 7.8011, 49.5258)
Luminance	0.0780 (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

#4239BE #B5BE39

analogous

#3972BE #4239BE #8439BE

triadic

#4239BE #BE4239 #39BE42

tetradic

#4239BE #BE3972 #B5BE39 #39BE84

square

#4239BE #BE3972 #B5BE39 #39BE84

split-complementary

#4239BE #BE8439 #72BE39

monochromatic

#211D60 #322B8F #4239BE #6B64D0 #9893DF

Accessibility & contrast

On white

8.20

#4239BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#4239BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239BE

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239BE	#FFFFFF	#000000	##FFFFFF
##4239BE	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C2

Deuteranopia (green-blind)

#0049BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4239be;
/* rgb */ color: rgb(66, 57, 190);
/* oklch */ color: oklch(44.6% 0.199 277.6);

Tailwind

colors: {
  custom: {
    50: '#8671d3',
    500: '#4239be',
    950: '#000000',
  },
}

SCSS

$custom: #4239be;
$custom-light: #8671d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4239be",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 190
  },
  "hsl": {
    "h": 244.06,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44599,
    "c": 0.19907,
    "h": 277.6
  },
  "luminance": 0.07802
}

Semantic roles & 50–950 ramp

primary

#4239BE

secondary

#C5CA89

accent

#DD4BD3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4239BE

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

Preview Lab → · Contrast checker → · Palette generator →