#4239A5#4239A5

#4239A5 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.167 H 280.3°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#4239A5
RGB	rgb(66, 57, 165)
HSL	hsl(245, 49%, 44%)
HSV	hsv(245, 65%, 65%)
CMYK	cmyk(60%, 65.5%, 0%, 35.3%)
CIE-LAB	lab(31.35, 35.82, -57.11)
CIE-LCH	lch(31.35, 67.41, 302.10°)
OKLab	oklab(42.32% 0.0297 -0.1644)
OKLCH	oklch(42.32% 0.167 280.3)
XYZ	xyz(10.4993, 6.8004, 36.3494)
Luminance	0.0680 (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

#4239A5 #9CA539

analogous

#3966A5 #4239A5 #7839A5

triadic

#4239A5 #A54239 #39A542

tetradic

#4239A5 #A53966 #9CA539 #39A578

square

#4239A5 #A53966 #9CA539 #39A578

split-complementary

#4239A5 #A57839 #66A539

monochromatic

#1E1A4A #302978 #4239A5 #6056C5 #8B84D4

Accessibility & contrast

On white

8.90

#4239A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#4239A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239A5

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239A5	#FFFFFF	#000000	##FFFFFF
##4239A5	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA8

Deuteranopia (green-blind)

#0046A3

Tritanopia (blue-blind)

#00546A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #4239a5;
/* rgb */ color: rgb(66, 57, 165);
/* oklch */ color: oklch(42.3% 0.167 280.3);

Tailwind

colors: {
  custom: {
    50: '#8170c1',
    500: '#4239a5',
    950: '#000000',
  },
}

SCSS

$custom: #4239a5;
$custom-light: #8170c1;
$custom-dark: #000000;

JSON

{
  "hex": "#4239a5",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 165
  },
  "hsl": {
    "h": 245,
    "s": 48.649,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42318,
    "c": 0.16703,
    "h": 280.3
  },
  "luminance": 0.06801
}

Semantic roles & 50–950 ramp

primary

#4239A5

secondary

#B9BE7B

accent

#D850CD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #4239A5

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

Preview Lab → · Contrast checker → · Palette generator →