#4042DA#4042DA

#4042DA is a mid, highly saturated blue. Relative luminance 0.100; OKLCH L 48.5% C 0.224 H 273.6°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#4042DA
RGB	rgb(64, 66, 218)
HSL	hsl(239, 68%, 55%)
HSV	hsv(239, 71%, 85%)
CMYK	cmyk(70.6%, 69.7%, 0%, 14.5%)
CIE-LAB	lab(37.93, 47.68, -77.45)
CIE-LCH	lch(37.93, 90.95, 301.62°)
OKLab	oklab(48.48% 0.0142 -0.224)
OKLCH	oklch(48.48% 0.224 273.6)
XYZ	xyz(16.7132, 10.0467, 67.3745)
Luminance	0.1005 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.24

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4042DA #DAD840

analogous

#408FDA #4042DA #8B40DA

triadic

#4042DA #DA4042 #42DA40

tetradic

#4042DA #DA408F #DAD840 #40DA8B

square

#4042DA #DA408F #DAD840 #40DA8B

split-complementary

#4042DA #DA8B40 #8FDA40

monochromatic

#1A1B86 #2426B9 #4042DA #7375E4 #A7A7EE

Accessibility & contrast

On white

6.98

#4042DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#4042DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4042DA

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4042DA	#FFFFFF	#000000	##FFFFFF
##4042DA	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061DF

Deuteranopia (green-blind)

#0052D7

Tritanopia (blue-blind)

#006C89

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4042da;
/* rgb */ color: rgb(64, 66, 218);
/* oklch */ color: oklch(48.5% 0.224 273.6);

Tailwind

colors: {
  custom: {
    50: '#8a77e7',
    500: '#4042da',
    950: '#000000',
  },
}

SCSS

$custom: #4042da;
$custom-light: #8a77e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4042da",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 218
  },
  "hsl": {
    "h": 239.221,
    "s": 67.544,
    "l": 55.294
  },
  "oklch": {
    "l": 0.48484,
    "c": 0.22441,
    "h": 273.6
  },
  "luminance": 0.10048
}

Semantic roles & 50–950 ramp

primary

#4042DA

secondary

#DBDA9B

accent

#E83DEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4042DA

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

Preview Lab → · Contrast checker → · Palette generator →