#4042BC#4042BC

#4042BC is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.7% C 0.187 H 275.4°. Best body text is #FFFFFF at 7.71:1 contrast (WCAG AA passes).

Color values

HEX	#4042BC
RGB	rgb(64, 66, 188)
HSL	hsl(239, 49%, 49%)
HSV	hsv(239, 66%, 74%)
CMYK	cmyk(66%, 64.9%, 0%, 26.3%)
CIE-LAB	lab(35.23, 37.68, -64.45)
CIE-LCH	lch(35.23, 74.65, 300.31°)
OKLab	oklab(45.72% 0.0176 -0.1859)
OKLCH	oklch(45.72% 0.187 275.4)
XYZ	xyz(13.1367, 8.6161, 48.5380)
Luminance	0.0862 (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

#4042BC #BCBA40

analogous

#4080BC #4042BC #7C40BC

triadic

#4042BC #BC4042 #42BC40

tetradic

#4042BC #BC4080 #BCBA40 #40BC7C

square

#4042BC #BC4080 #BCBA40 #40BC7C

split-complementary

#4042BC #BC7C40 #80BC40

monochromatic

#212261 #30328E #4042BC #6C6ECD #9A9BDD

Accessibility & contrast

On white

7.71

#4042BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#4042BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4042BC

7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4042BC	#FFFFFF	#000000	##FFFFFF
##4042BC	1.00	7.71	2.72	7.71
#FFFFFF	7.71	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C0

Deuteranopia (green-blind)

#004DBA

Tritanopia (blue-blind)

#006279

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4042bc;
/* rgb */ color: rgb(64, 66, 188);
/* oklch */ color: oklch(45.7% 0.187 275.4);

Tailwind

colors: {
  custom: {
    50: '#8477d1',
    500: '#4042bc',
    950: '#000000',
  },
}

SCSS

$custom: #4042bc;
$custom-light: #8477d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4042bc",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 188
  },
  "hsl": {
    "h": 239.032,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.45715,
    "c": 0.18674,
    "h": 275.4
  },
  "luminance": 0.08617
}

Semantic roles & 50–950 ramp

primary

#4042BC

secondary

#C9C88F

accent

#D74FD9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4042BC

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

Preview Lab → · Contrast checker → · Palette generator →