#4239A3#4239A3

#4239A3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.1% C 0.164 H 280.5°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#4239A3
RGB	rgb(66, 57, 163)
HSL	hsl(245, 48%, 43%)
HSV	hsv(245, 65%, 64%)
CMYK	cmyk(59.5%, 65%, 0%, 36.1%)
CIE-LAB	lab(31.18, 35.16, -56.18)
CIE-LCH	lch(31.18, 66.27, 302.04°)
OKLab	oklab(42.14% 0.0299 -0.1616)
OKLCH	oklch(42.14% 0.164 280.5)
XYZ	xyz(10.3187, 6.7281, 35.3981)
Luminance	0.0673 (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

#4239A3 #9AA339

analogous

#3965A3 #4239A3 #7739A3

triadic

#4239A3 #A34239 #39A342

tetradic

#4239A3 #A33965 #9AA339 #39A377

square

#4239A3 #A33965 #9AA339 #39A377

split-complementary

#4239A3 #A37739 #65A339

monochromatic

#1D1948 #302976 #4239A3 #5F55C4 #8A83D4

Accessibility & contrast

On white

8.95

#4239A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#4239A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4239A3

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4239A3	#FFFFFF	#000000	##FFFFFF
##4239A3	1.00	8.95	2.35	8.95
#FFFFFF	8.95	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA6

Deuteranopia (green-blind)

#0045A1

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #4239a3;
/* rgb */ color: rgb(66, 57, 163);
/* oklch */ color: oklch(42.1% 0.164 280.5);

Tailwind

colors: {
  custom: {
    50: '#8170bf',
    500: '#4239a3',
    950: '#000000',
  },
}

SCSS

$custom: #4239a3;
$custom-light: #8170bf;
$custom-dark: #000000;

JSON

{
  "hex": "#4239a3",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 163
  },
  "hsl": {
    "h": 245.094,
    "s": 48.182,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42143,
    "c": 0.16437,
    "h": 280.5
  },
  "luminance": 0.06729
}

Semantic roles & 50–950 ramp

primary

#4239A3

secondary

#B8BD7A

accent

#D850CC

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #4239A3

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

Preview Lab → · Contrast checker → · Palette generator →