#4242BC#4242BC

#4242BC is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.8% C 0.186 H 276.2°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#4242BC
RGB	rgb(66, 66, 188)
HSL	hsl(240, 48%, 50%)
HSV	hsv(240, 65%, 74%)
CMYK	cmyk(64.9%, 64.9%, 0%, 26.3%)
CIE-LAB	lab(35.37, 37.96, -64.22)
CIE-LCH	lch(35.37, 74.60, 300.59°)
OKLab	oklab(45.85% 0.02 -0.1852)
OKLCH	oklch(45.85% 0.186 276.2)
XYZ	xyz(13.2691, 8.6844, 48.5442)
Luminance	0.0869 (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

#4242BC #BCBC42

analogous

#427FBC #4242BC #7F42BC

triadic

#4242BC #BC4242 #42BC42

tetradic

#4242BC #BC427F #BCBC42 #42BC7F

square

#4242BC #BC427F #BCBC42 #42BC7F

split-complementary

#4242BC #BC7F42 #7FBC42

monochromatic

#222261 #32328F #4242BC #6F6FCC #9C9CDC

Accessibility & contrast

On white

7.67

#4242BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#4242BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4242BC

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4242BC	#FFFFFF	#000000	##FFFFFF
##4242BC	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C0

Deuteranopia (green-blind)

#004EBA

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4242bc;
/* rgb */ color: rgb(66, 66, 188);
/* oklch */ color: oklch(45.8% 0.186 276.2);

Tailwind

colors: {
  custom: {
    50: '#8577d1',
    500: '#4242bc',
    950: '#000000',
  },
}

SCSS

$custom: #4242bc;
$custom-light: #8577d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4242bc",
  "rgb": {
    "r": 66,
    "g": 66,
    "b": 188
  },
  "hsl": {
    "h": 240,
    "s": 48.031,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45849,
    "c": 0.18626,
    "h": 276.2
  },
  "luminance": 0.08686
}

Semantic roles & 50–950 ramp

primary

#4242BC

secondary

#C9C991

accent

#D850D8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4242BC

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

Preview Lab → · Contrast checker → · Palette generator →