#4239BF#4239BF

#4239BF is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.7% C 0.200 H 277.5°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#4239BF
RGB	rgb(66, 57, 191)
HSL	hsl(244, 54%, 49%)
HSV	hsv(244, 70%, 75%)
CMYK	cmyk(65.4%, 70.2%, 0%, 25.1%)
CIE-LAB	lab(33.66, 44.30, -68.79)
CIE-LCH	lch(33.66, 81.82, 302.78°)
OKLab	oklab(44.69% 0.0262 -0.1986)
OKLCH	oklch(44.69% 0.2 277.5)
XYZ	xyz(13.1108, 7.8450, 50.1034)
Luminance	0.0785 (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

#4239BF #B6BF39

analogous

#3973BF #4239BF #8539BF

triadic

#4239BF #BF4239 #39BF42

tetradic

#4239BF #BF3973 #B6BF39 #39BF85

square

#4239BF #BF3973 #B6BF39 #39BF85

split-complementary

#4239BF #BF8539 #73BF39

monochromatic

#211D61 #322B90 #4239BF #6C64D1 #9993DF

Accessibility & contrast

On white

8.17

#4239BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#4239BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239BF

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239BF	#FFFFFF	#000000	##FFFFFF
##4239BF	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C3

Deuteranopia (green-blind)

#0049BD

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #4239bf;
/* rgb */ color: rgb(66, 57, 191);
/* oklch */ color: oklch(44.7% 0.200 277.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#4239bf",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 191
  },
  "hsl": {
    "h": 244.03,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.44694,
    "c": 0.2003,
    "h": 277.5
  },
  "luminance": 0.07846
}

Semantic roles & 50–950 ramp

primary

#4239BF

secondary

#C6CA8A

accent

#DD4AD4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0814

muted

#7D7B83

Preview Lab

Preview with #4239BF

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

Preview Lab → · Contrast checker → · Palette generator →