#4042D9#4042D9

#4042D9 is a mid, highly saturated blue. Relative luminance 0.100; OKLCH L 48.4% C 0.223 H 273.7°. Best body text is #FFFFFF at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#4042D9
RGB	rgb(64, 66, 217)
HSL	hsl(239, 67%, 55%)
HSV	hsv(239, 71%, 85%)
CMYK	cmyk(70.5%, 69.6%, 0%, 14.9%)
CIE-LAB	lab(37.83, 47.35, -77.03)
CIE-LCH	lch(37.83, 90.42, 301.58°)
OKLab	oklab(48.39% 0.0143 -0.2227)
OKLCH	oklch(48.39% 0.223 273.7)
XYZ	xyz(16.5828, 9.9946, 66.6874)
Luminance	0.1000 (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

#4042D9 #D9D740

analogous

#408ED9 #4042D9 #8B40D9

triadic

#4042D9 #D94042 #42D940

tetradic

#4042D9 #D9408E #D9D740 #40D98B

square

#4042D9 #D9408E #D9D740 #40D98B

split-complementary

#4042D9 #D98B40 #8ED940

monochromatic

#1A1C84 #2426B7 #4042D9 #7375E3 #A6A7ED

Accessibility & contrast

On white

7.00

#4042D9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#4042D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4042D9

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4042D9	#FFFFFF	#000000	##FFFFFF
##4042D9	1.00	7.00	3.00	7.00
#FFFFFF	7.00	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060DE

Deuteranopia (green-blind)

#0052D6

Tritanopia (blue-blind)

#006C89

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4042d9;
/* rgb */ color: rgb(64, 66, 217);
/* oklch */ color: oklch(48.4% 0.223 273.7);

Tailwind

colors: {
  custom: {
    50: '#8a77e6',
    500: '#4042d9',
    950: '#000000',
  },
}

SCSS

$custom: #4042d9;
$custom-light: #8a77e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4042d9",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 217
  },
  "hsl": {
    "h": 239.216,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.48389,
    "c": 0.22319,
    "h": 273.7
  },
  "luminance": 0.09996
}

Semantic roles & 50–950 ramp

primary

#4042D9

secondary

#DADA9A

accent

#E73EEA

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #4042D9

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

Preview Lab → · Contrast checker → · Palette generator →