#4239BC#4239BC

#4239BC is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.4% C 0.197 H 277.8°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#4239BC
RGB	rgb(66, 57, 188)
HSL	hsl(244, 53%, 48%)
HSV	hsv(244, 70%, 74%)
CMYK	cmyk(64.9%, 69.7%, 0%, 26.3%)
CIE-LAB	lab(33.38, 43.33, -67.48)
CIE-LCH	lch(33.38, 80.19, 302.71°)
OKLab	oklab(44.41% 0.0267 -0.1947)
OKLCH	oklch(44.41% 0.197 277.8)
XYZ	xyz(12.7841, 7.7143, 48.3825)
Luminance	0.0771 (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

#4239BC #B3BC39

analogous

#3971BC #4239BC #8339BC

triadic

#4239BC #BC4239 #39BC42

tetradic

#4239BC #BC3971 #B3BC39 #39BC83

square

#4239BC #BC3971 #B3BC39 #39BC83

split-complementary

#4239BC #BC8339 #71BC39

monochromatic

#211D5E #322B8D #4239BC #6A63D0 #9792DE

Accessibility & contrast

On white

8.26

#4239BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#4239BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239BC

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239BC	#FFFFFF	#000000	##FFFFFF
##4239BC	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C0

Deuteranopia (green-blind)

#0049BA

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4239bc;
/* rgb */ color: rgb(66, 57, 188);
/* oklch */ color: oklch(44.4% 0.197 277.8);

Tailwind

colors: {
  custom: {
    50: '#8571d1',
    500: '#4239bc',
    950: '#000000',
  },
}

SCSS

$custom: #4239bc;
$custom-light: #8571d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4239bc",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 188
  },
  "hsl": {
    "h": 244.122,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.4441,
    "c": 0.19657,
    "h": 277.8
  },
  "luminance": 0.07715
}

Semantic roles & 50–950 ramp

primary

#4239BC

secondary

#C4C988

accent

#DD4BD3

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4239BC

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

Preview Lab → · Contrast checker → · Palette generator →