#4042CA#4042CA

#4042CA is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.0% C 0.205 H 274.5°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#4042CA
RGB	rgb(64, 66, 202)
HSL	hsl(239, 57%, 52%)
HSV	hsv(239, 68%, 79%)
CMYK	cmyk(68.3%, 67.3%, 0%, 20.8%)
CIE-LAB	lab(36.46, 42.39, -70.62)
CIE-LCH	lch(36.46, 82.37, 300.97°)
OKLab	oklab(46.98% 0.0162 -0.204)
OKLCH	oklch(46.98% 0.205 274.5)
XYZ	xyz(14.7197, 9.2493, 56.8752)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.91

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4042CA #CAC840

analogous

#4087CA #4042CA #8340CA

triadic

#4042CA #CA4042 #42CA40

tetradic

#4042CA #CA4087 #CAC840 #40CA83

square

#4042CA #CA4087 #CAC840 #40CA83

split-complementary

#4042CA #CA8340 #87CA40

monochromatic

#1F2070 #2C2EA0 #4042CA #7071D7 #A0A1E5

Accessibility & contrast

On white

7.37

#4042CA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#4042CA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4042CA

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4042CA	#FFFFFF	#000000	##FFFFFF
##4042CA	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCE

Deuteranopia (green-blind)

#004FC7

Tritanopia (blue-blind)

#006680

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #4042ca;
/* rgb */ color: rgb(64, 66, 202);
/* oklch */ color: oklch(47.0% 0.205 274.5);

Tailwind

colors: {
  custom: {
    50: '#8777db',
    500: '#4042ca',
    950: '#000000',
  },
}

SCSS

$custom: #4042ca;
$custom-light: #8777db;
$custom-dark: #000000;

JSON

{
  "hex": "#4042ca",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 202
  },
  "hsl": {
    "h": 239.13,
    "s": 56.557,
    "l": 52.157
  },
  "oklch": {
    "l": 0.46982,
    "c": 0.20464,
    "h": 274.5
  },
  "luminance": 0.09251
}

Semantic roles & 50–950 ramp

primary

#4042CA

secondary

#D1D095

accent

#DE48E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4042CA

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

Preview Lab → · Contrast checker → · Palette generator →