#4242DB#4242DB

#4242DB is a mid, highly saturated blue. Relative luminance 0.102; OKLCH L 48.7% C 0.225 H 274.2°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#4242DB
RGB	rgb(66, 66, 219)
HSL	hsl(240, 68%, 56%)
HSV	hsv(240, 70%, 86%)
CMYK	cmyk(69.9%, 69.9%, 0%, 14.1%)
CIE-LAB	lab(38.14, 48.22, -77.67)
CIE-LCH	lch(38.14, 91.42, 301.83°)
OKLab	oklab(48.7% 0.0163 -0.2245)
OKLCH	oklch(48.7% 0.225 274.2)
XYZ	xyz(16.9769, 10.1675, 68.0719)
Luminance	0.1017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.46

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4242DB #DBDB42

analogous

#428EDB #4242DB #8E42DB

triadic

#4242DB #DB4242 #42DB42

tetradic

#4242DB #DB428E #DBDB42 #42DB8E

square

#4242DB #DB428E #DBDB42 #42DB8E

split-complementary

#4242DB #DB8E42 #8EDB42

monochromatic

#1A1A89 #2424BC #4242DB #7575E5 #A9A9EF

Accessibility & contrast

On white

6.92

#4242DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#4242DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4242DB

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4242DB	#FFFFFF	#000000	##FFFFFF
##4242DB	1.00	6.92	3.03	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061E0

Deuteranopia (green-blind)

#0053D8

Tritanopia (blue-blind)

#006C8A

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4242db;
/* rgb */ color: rgb(66, 66, 219);
/* oklch */ color: oklch(48.7% 0.225 274.2);

Tailwind

colors: {
  custom: {
    50: '#8b78e7',
    500: '#4242db',
    950: '#000000',
  },
}

SCSS

$custom: #4242db;
$custom-light: #8b78e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4242db",
  "rgb": {
    "r": 66,
    "g": 66,
    "b": 219
  },
  "hsl": {
    "h": 240,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.48699,
    "c": 0.22513,
    "h": 274.2
  },
  "luminance": 0.10169
}

Semantic roles & 50–950 ramp

primary

#4242DB

secondary

#DCDC9D

accent

#EB3DEB

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0916

muted

#7E7B84

Preview Lab

Preview with #4242DB

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

Preview Lab → · Contrast checker → · Palette generator →