#4042CC#4042CC

#4042CC is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.2% C 0.207 H 274.4°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#4042CC
RGB	rgb(64, 66, 204)
HSL	hsl(239, 58%, 53%)
HSV	hsv(239, 69%, 80%)
CMYK	cmyk(68.6%, 67.6%, 0%, 20%)
CIE-LAB	lab(36.64, 43.05, -71.49)
CIE-LCH	lch(36.64, 83.45, 301.06°)
OKLab	oklab(47.17% 0.016 -0.2065)
OKLCH	oklch(47.17% 0.207 274.4)
XYZ	xyz(14.9580, 9.3447, 58.1304)
Luminance	0.0935 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.01

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4042CC #CCCA40

analogous

#4088CC #4042CC #8440CC

triadic

#4042CC #CC4042 #42CC40

tetradic

#4042CC #CC4088 #CCCA40 #40CC84

square

#4042CC #CC4088 #CCCA40 #40CC84

split-complementary

#4042CC #CC8440 #88CC40

monochromatic

#1F2073 #2C2DA3 #4042CC #7072D9 #A1A2E6

Accessibility & contrast

On white

7.32

#4042CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#4042CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4042CC

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4042CC	#FFFFFF	#000000	##FFFFFF
##4042CC	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DD0

Deuteranopia (green-blind)

#0050C9

Tritanopia (blue-blind)

#006782

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #4042cc;
/* rgb */ color: rgb(64, 66, 204);
/* oklch */ color: oklch(47.2% 0.207 274.4);

Tailwind

colors: {
  custom: {
    50: '#8777dd',
    500: '#4042cc',
    950: '#000000',
  },
}

SCSS

$custom: #4042cc;
$custom-light: #8777dd;
$custom-dark: #000000;

JSON

{
  "hex": "#4042cc",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 204
  },
  "hsl": {
    "h": 239.143,
    "s": 57.851,
    "l": 52.549
  },
  "oklch": {
    "l": 0.47167,
    "c": 0.20714,
    "h": 274.4
  },
  "luminance": 0.09346
}

Semantic roles & 50–950 ramp

primary

#4042CC

secondary

#D2D195

accent

#DF47E1

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4042CC

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

Preview Lab → · Contrast checker → · Palette generator →