#4042E5#4042E5

#4042E5 is a mid, highly saturated blue. Relative luminance 0.106; OKLCH L 49.5% C 0.238 H 273.0°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#4042E5
RGB	rgb(64, 66, 229)
HSL	hsl(239, 76%, 57%)
HSV	hsv(239, 72%, 90%)
CMYK	cmyk(72.1%, 71.2%, 0%, 10.2%)
CIE-LAB	lab(38.97, 51.25, -82.02)
CIE-LCH	lch(38.97, 96.71, 302.00°)
OKLab	oklab(49.55% 0.0126 -0.2373)
OKLCH	oklch(49.55% 0.238 273)
XYZ	xyz(18.2007, 10.6417, 75.2084)
Luminance	0.1064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4042E5 #E5E340

analogous

#4094E5 #4042E5 #9140E5

triadic

#4042E5 #E54042 #42E540

tetradic

#4042E5 #E54094 #E5E340 #40E591

square

#4042E5 #E54094 #E5E340 #40E591

split-complementary

#4042E5 #E59140 #94E540

monochromatic

#141696 #1C1ECC #4042E5 #7677EC #ACADF4

Accessibility & contrast

On white

6.71

#4042E5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#4042E5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4042E5

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4042E5	#FFFFFF	#000000	##FFFFFF
##4042E5	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064EA

Deuteranopia (green-blind)

#0054E2

Tritanopia (blue-blind)

#00708F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4042e5;
/* rgb */ color: rgb(64, 66, 229);
/* oklch */ color: oklch(49.5% 0.238 273.0);

Tailwind

colors: {
  custom: {
    50: '#8c78ef',
    500: '#4042e5',
    950: '#000000',
  },
}

SCSS

$custom: #4042e5;
$custom-light: #8c78ef;
$custom-dark: #000000;

JSON

{
  "hex": "#4042e5",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 229
  },
  "hsl": {
    "h": 239.273,
    "s": 76.037,
    "l": 57.451
  },
  "oklch": {
    "l": 0.49547,
    "c": 0.2376,
    "h": 273
  },
  "luminance": 0.10644
}

Semantic roles & 50–950 ramp

primary

#4042E5

secondary

#E2E19F

accent

#F035F3

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0917

muted

#7E7B85

Preview Lab

Preview with #4042E5

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

Preview Lab → · Contrast checker → · Palette generator →